PDF malware analysis — malicious · d962a6cecaab66e5

MALICIOUS

PDF

81.3 KB Created: 2021-09-17 11:08:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23

MD5: 8fee3e06d515fba3c0b93b278660c474 SHA-1: c5cca8d7b5fae09bafc369c3c90a039fe55d0f15 SHA-256: d962a6cecaab66e591a9bb00a58eeaaae4070b66edaee0787b9434d9de0284a8

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains a link farm with numerous URLs, several of which point to compromised CMS upload directories, indicating a potential phishing or malware distribution scheme. The presence of external URIs and link farm heuristics strongly suggests an attempt to redirect users to malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9949

Heuristics 6

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.
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 https://godparents4tz.org/home/god/public_html/ckfinder/userfiles/files/85024196793.pdf In PDF document text
- https://kop-trans.pl/uploads/userfiles/files/lowosuvemezevujiz.pdfIn PDF document text
- http://bestforfishing.com/wp-content/plugins/super-forms/uploads/php/files/a95ed78e320231f23a219ef43820cec8/fubujug.pdfIn PDF document text
- http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/16137a7919186f---17256409629.pdfIn PDF document text
- http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c0b362cbd8---22631703769.pdfIn PDF document text
- https://onecre.com/images/content/files/xikobogevivutozar.pdfIn PDF document text
- https://aronabritcan.com/userfiles/file/xolubemogisinirow.pdfIn PDF document text
- http://roycraft.ca/userfiles/file/lulatanin.pdfIn PDF document text
- http://linklandhotels.com/upfile/editor/files/94036411729.pdfIn PDF document text
- http://khiensa.com/UserFiles/File/diwofujanolilisalumiti.pdfIn PDF document text
- http://ferien-in-zahren.de/images/file/47600406034.pdfIn PDF document text
- https://ilonew.tasksplan.com/userfiles/files/9318479223.pdfIn PDF document text
- http://chelseafoodmart.com/uploads/files/36992622441.pdfIn PDF document text
- http://aylabawadi.ae/userfiles/file/polaneze.pdfIn PDF document text
- http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/161316a0e203f4---46446516438.pdfIn PDF document text
- https://korankertas.com/contents/files/sevede.pdfIn PDF document text
- http://clinicaveterinariacene.com/userfiles/files/99154784195.pdfIn PDF document text
- http://sudeoksa.org/userfiles/file/20210907092132.pdfIn PDF document text
- http://ipea.kr/userData/board/file/nofakuj.pdfIn PDF document text
- https://artistprasanna.com/userfiles/file/wepixiwanevamulevisamivig.pdfIn PDF document text
- https://adikmanis.com/contents/files/20083022837.pdfIn PDF document text
- https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/067f3634aef14d1766d55ebe1bd4e8ca/20142211925.pdfIn PDF document text
- https://aeternoplanning.com/ckfinder/userfiles/files/jupijejeriw.pdfIn PDF document text
- https://girl0229960192.com/upload/users/files/letipatubipelozokexaxe.pdfIn PDF document text
- http://lrm.mcdonalds.ua/ckfinder/userfiles/files/13420529369.pdfIn PDF document text
- https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=daftar+harga+hp+samsung+galaxy+j7PDF 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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d9c8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD9C8	10956 bytes
SHA-256: `0c9a7ddb533306c85bf898725d8ba083387e27172b8da8e10f82b48751d7d8ea`
`font_01_sfnt_off0000f325.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF325	17092 bytes
SHA-256: `ef847499ef399040bba761af1e6b383473c4c3ded0cddc6437fde6e8b0b8caf8`
`font_02_sfnt_off00011fc7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11FC7	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

Open this report in the interactive analyzer, or submit your own file for analysis.