PDF malware analysis — malicious · 21a689a175b18d6c

MALICIOUS

PDF

50.6 KB Created: 2021-01-12 13:42:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31

MD5: 8470f54dcdfed237854b3291916341ee SHA-1: 8ad05cff34e9dc453564ee98995b0d4481a5b400 SHA-256: 21a689a175b18d6c56e53118b66fe3b9eb65c063cc315a7494f7c2691994d4c8

182 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF file contains multiple embedded links, with at least one pointing to known malicious redirector infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent. The document's structure suggests it's designed to lure users into clicking these links, which likely lead to phishing sites or malware downloads. No scripts were extracted, but the presence of malicious links is sufficient evidence for the attack pattern.

Machine Learning

Nyx PDF Classifier malicious score 0.7630

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
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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 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://traffine.ru/aws?utm_term=uiview+transform+autolayout In PDF document text
- https://tapidokebijimub.weebly.com/uploads/1/3/4/5/134577153/684278.pdfIn PDF document text
- https://site-1168537.mozfiles.com/files/1168537/jump_ball_game_2.pdfIn PDF document text
- https://cdn.sqhk.co/muxaferamet/g1jhyjj/frozen_vegetables_ninja_foodi.pdfIn PDF document text
- https://digonowokeke.weebly.com/uploads/1/3/1/8/131856318/1776312.pdfIn PDF document text
- https://fenibelamej.weebly.com/uploads/1/3/4/4/134464240/21003f28100.pdfIn PDF document text
- https://site-1176264.mozfiles.com/files/1176264/29863724996.pdfIn PDF document text
- https://cdn.sqhk.co/wixexozesila/hhjaYiK/baruwen.pdfIn PDF document text
- https://ganalazukomej.weebly.com/uploads/1/3/4/7/134714395/sazukiboroka_pidopen.pdfIn PDF document text
- https://cdn.sqhk.co/rowalulo/jfhdhim/retro_arcade_gIn PDF document text
- https://s3.amazonaws.com/zerejibixupav/cessna_182_performance_calculator.pdfIn PDF document text
- https://s3.amazonaws.com/zirojopemup/tosaresoxirobumidinadibe.pdfIn PDF document text
- https://s3.amazonaws.com/julexekubaj/jajivupezepesafowa.pdfIn PDF document text
- https://s3.amazonaws.com/limepusotanal/66112653854.pdfIn PDF document text

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