PDF malware analysis — malicious · 96d4eae1985010e9

MALICIOUS

PDF

93.1 KB Created: 2021-07-13 16:34:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14

MD5: dfbffde40ef9a990429f51086b070f88 SHA-1: 1bae7bb28ec54130e4f8a15ee82dd6bfb73d6438 SHA-256: 96d4eae1985010e9f580ee60b4a106bc00bbaec520dee908e4fbcf07b63667e9

164 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains embedded JavaScript and numerous external URIs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users to malicious content. The embedded JavaScript likely facilitates the redirection or further payload delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9746

Heuristics 7

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://culbertsonlawyer.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/dafofomusetibef.pdf In PDF document text
- https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/7in6l0esikb8sgij2981cle8r6/47575541667.pdfIn PDF document text
- http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608000557264d---vetofomekox.pdfIn PDF document text
- http://parentini.it/userfiles/files/93606682090.pdfIn PDF document text
- https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a936ca30efe---7926807636.pdfIn PDF document text
- http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/160702f60d1954---13521141764.pdfIn PDF document text
- http://metaglas.kr/userData/board/file/xotipokatitusomopukajo.pdfIn PDF document text
- https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa863b81986---16833724714.pdfIn PDF document text
- https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/16070094537420---midomakedonawudadediwune.pdfIn PDF document text
- http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9158ba756---76470992323.pdfIn PDF document text
- https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/5b508bb197b524fcbaa889d2205892f6/gufelipovurubezosavinew.pdfIn PDF document text
- https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b61fe72ada6---demegofozizagikopidora.pdfIn PDF document text
- http://asokmontridental.com/userfiles/file/53543992888.pdfIn PDF document text
- http://arci-mp.fr/admin/File/27485506669.pdfIn PDF document text
- http://wchs67.com/clients/f/fd/fd50fd9748f3592dabdfdad26f378f15/File/88309657516.pdfIn PDF document text
- https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/d687cf5ec169a55cde4c42b0863440a1/12706983550.pdfIn PDF document text
- https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/33f039fc0c144fd6c28d771020da3f8a/69427112407.pdfIn PDF document text
- https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/f7870bdf124000421b84f0b1ba903657/1427622192.pdfIn PDF document text
- https://henklinders.nl/henklinders/upload/files/69626883552.pdfIn PDF document text
- https://belloverde.net/emailer/file/kawupabinekigivemubadivo.pdfIn PDF document text
- http://carshopm.com/js/upload/files/ribemaradukijale.pdfIn PDF document text
- https://xn--i1aam8cb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/b73eeb4392fcf8e9f08310d8f62582e6/42339549592.pdfIn PDF document text
- https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bf197573cf---bijewijewu.pdfIn PDF document text
- https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/k0q6rfflelg8ca9u8775slu8bc/tekonipirefil.pdfIn PDF document text
- http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/10cf62b41a293bb4f7d3a372744fb1a9/zuzewigopukugejif.pdfIn PDF document text
- http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4b6e1d6865---vumaratazavanemi.pdfIn PDF document text
- http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16070d35129bae---pimamupobozulaxur.pdfIn PDF document text
- https://duext.com/wp-content/plugins/super-forms/uploads/php/files/1233c0b666a1c72e5970ef5993e19b7f/motituwuf.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=best+th12+layoutPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f44b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF44B	17212 bytes
SHA-256: `0030319892a5d83b675eefbddc8b4cf8a526c1d6d372bfd2701c9e5ed2ef6a51`
`font_01_sfnt_off00012151.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12151	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00013968.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13968	10348 bytes
SHA-256: `362846c9adbd4c8b123b55a470c714253b968030571edba5e60ba4c30770ad53`
`font_03_sfnt_off0001511f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1511F	16084 bytes
SHA-256: `d11bfa2b02c462a3f9075532ce7ec1132ca3691ccd6a850e0dcf0119a218c04c`

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