PDF malware analysis — malicious · aacfbf96e05e04d9

MALICIOUS

PDF

67.6 KB Created: 2020-12-28 08:45:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12

MD5: 867282a4a1a930b92adbe70c71c8a45b SHA-1: 6f6394bb92a1956154ded9c52b3620b56c151a83 SHA-256: aacfbf96e05e04d94f6c88401609039e3c3d3554b61f273b6f1202d8d02d15fb

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains numerous embedded URLs, many of which point to disposable hosting services and are associated with link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The document's structure and embedded links suggest it is designed to lure users to malicious websites.

Machine Learning

Nyx PDF Classifier malicious score 0.9689

Heuristics 4

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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
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://trafffi.ru/aws?utm_term=good+morning+images+hd PDF link annotation
- https://buritovetozew.weebly.com/uploads/1/3/4/4/134486370/252da45.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4382187/normal_5f8bd6f339fb1.pdfIn PDF document text
- https://xikalevu.weebly.com/uploads/1/3/4/3/134319979/lizixidorenotuki.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4421939/normal_5f993e729e828.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4460060/normal_5fc806b9c452c.pdfIn PDF document text
- https://cdn.sqhk.co/lixejudazeza/jchaGjf/kobe_vs_lebron_james.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4447884/normal_5fd823137a02b.pdfIn PDF document text
- https://tonudekosinin.weebly.com/uploads/1/3/4/6/134685286/5060371.pdfIn PDF document text
- https://fofosaja.weebly.com/uploads/1/3/4/2/134234592/gedim.pdfIn PDF document text
- https://tovalowu.weebly.com/uploads/1/3/4/3/134375552/3707038.pdfIn PDF document text
- https://cdn.sqhk.co/zotipimesaza/Vwjbgi4/87716468871.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/tadovu/william_wordsworth_biography.pdfIn PDF document text
- https://s3.amazonaws.com/xujitezu/free_resume_templates_word_with_picture.pdfIn 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_off0000f72a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF72A	5236 bytes
SHA-256: `cf742a64587d8aa4ec68c765d0262c794b9e6fcd712ef3e6d88609ccab160318`
`font_01_sfnt_off000108c0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x108C0	1800 bytes
SHA-256: `daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e`

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