PDF malware analysis — malicious · 570b4afe4aef6ebe

MALICIOUS

PDF

81.0 KB Created: 2021-09-21 17:15:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31

MD5: 0cfa7fbc46885938b6ed57cd79e5acab SHA-1: 9100ac26d3994229aa6d197a087a20913c3a9b9b SHA-256: 570b4afe4aef6ebe1a6c727cc5443dbdf74ecb00bcf6f332ea630b68d1d3c0f0

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate the document functions as a link farm, directing users to multiple external URLs, some hosted on compromised WordPress sites or disposable domains. The embedded URLs are likely part of a phishing campaign or a distribution mechanism for further malware.

Machine Learning

Nyx PDF Classifier malicious score 0.9974

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://laborke.ru/uplcv?utm_term=how+to+icloud+email+on+android PDF link annotation
- https://encoyun.com/calisma2/files/uploads/10662419847.pdfIn PDF document text
- https://epponline.com/mentorfinancial/page_images/file/pexudegunovutiwimitit.pdfIn PDF document text
- http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16146cb731d664---jusepavodoxep.pdfIn PDF document text
- http://nawoo.net/userData/board/file/diwofirukekegagebofujafe.pdfIn PDF document text
- https://bjjewels.net/nbloom/fckuploads/file/samuvifonumamokanaxu.pdfIn PDF document text
- http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16135cd03c4cc9---3777524244.pdfIn PDF document text
- http://lnianemarzenie.pl/userfiles/file/luforovetapezasuwa.pdfIn PDF document text
- http://yuqiaohome.com/uploads/files/202109112330514410.pdfIn PDF document text
- http://greenhere.cn/upload/ckimg/files/202109211700561702.pdfIn PDF document text
- http://atut-biuro.com/uploaded/file/jixipaxidag.pdfIn PDF document text
- http://haohanlegend.com/Uploadfiles/files/kadime.pdfIn PDF document text
- http://propertiesforrent.com/userfiles/file///pedewizojox.pdfIn PDF document text
- http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1612e9c77c52f9---wuxaramesabilirukewof.pdfIn PDF document text
- https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/b84ff978568a07b5f8a27ab0d39625c2/bugiditomezexas.pdfIn PDF document text
- http://hyunsin.net/userfiles/file/31990940235.pdfIn PDF document text
- https://cukimentescukraszda.hu/files/files/45957615163.pdfIn PDF document text
- https://canevastoilestjean.com/upload/editor/file/dowilo.pdfIn PDF document text
- https://skywaynepal.com/userfiles/file/91269251007.pdfIn PDF document text
- https://sitpchemcieszyn.pl/_sitpchem/file/51353108113.pdfIn PDF document text
- https://travellifeafrica.com/ci/userfiles/files/3374957199.pdfIn PDF document text
- https://churchosonline.com/wp-content/plugins/super-forms/uploads/php/files/4a60c0f1a6321c26593fd60e5e9e493c/75523767345.pdfIn PDF document text
- https://innovativallatgyogyszer.hu/fileok/file/98156288539.pdfIn PDF document text
- http://jinistudy.com/_UploadFile/Images/file/wuvapoxijemo.pdfIn PDF document text
- https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/491b2a1491bcffab8272a2d7f0f29980/wabererukafugozujop.pdfIn PDF document text
- 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_off0000da67.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDA67	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000f27e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF27E	10540 bytes
SHA-256: `65db0de3794f2d874726a6cbab0323c967201482f0fb1b83c80919fdee660615`
`font_02_sfnt_off00010a74.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10A74	17168 bytes
SHA-256: `1e77ff0d9e054e905d51fb6a54158fc5f3a999c8a582a4ba85c424650ae36866`

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