PDF malware analysis — malicious · 2df0c963eed49f33

MALICIOUS

PDF

80.1 KB Created: 2021-06-11 01:16:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23

MD5: 7b6f8a9609e130c019f60b65acca37a4 SHA-1: 323b8eff9dec683572ce77c6a208fc5b048b9056 SHA-256: 2df0c963eed49f332804e7d1608caa3796db2c77dce8b48add1ea4ca2e144fbc

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The numerous external URLs embedded within the document, many pointing to compromised CMS uploads or disposable hosting, suggest a phishing or malware distribution lure. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics indicates a tactic to obscure the true destination or leverage compromised infrastructure.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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://pixomot.ru/uplcv?utm_term=kick+the+buddy+forever+mod+apk+everything+unlocked PDF link annotation
- http://albatrossmrn.com/konadnew/userfiles/file/zosazezetagi.pdfIn PDF document text
- https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/204d9666a03c4fc65516f8ad6b87bf7f/jojomima.pdfIn PDF document text
- http://ankamet.com/userfiles/file/74339803526.pdfIn PDF document text
- https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/894a1b083856f6c109aefd970e521886/temixib.pdfIn PDF document text
- https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/160896ab030296---63713184380.pdfIn PDF document text
- https://duext.com/wp-content/plugins/super-forms/uploads/php/files/62b9e28a3b25d8663c0762f0a6ff4af7/15350580758.pdfIn PDF document text
- https://tripleccompanies.com/wp-content/plugins/super-forms/uploads/php/files/b1f50c57c7f26e3ff83d8309be9f2ca7/fixorukasokidugilagux.pdfIn PDF document text
- https://avenue102.com/uploads/file/19232495642.pdfIn PDF document text
- https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/08bfc0uqtggfbucfqbmvqddn3n/27037578632.pdfIn PDF document text
- http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a8c80206251---36856531631.pdfIn PDF document text
- http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a80abd1e629---48244000735.pdfIn PDF document text
- http://cloverpark1961.com/clients/6/6a/6a73a08bb68f643008adb5efbbb44e43/File/mulenagevase.pdfIn PDF document text
- https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b211c433903---43602313765.pdfIn PDF document text
- http://czdashan.cn/uploadfile/file/2021060812485173499.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f02d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF02D	5728 bytes
SHA-256: `14838249465cb8476cb7d9387d9f608c445119c8664439d687dd61d3927d529c`
`font_01_sfnt_off00010391.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10391	21868 bytes
SHA-256: `609a191aa745d7535f665d8a130339092785c9847813f626fde5e2c61e32424b`

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