PDF malware analysis — malicious · c093e7ae9ffb065c

MALICIOUS

PDF

71.6 KB Created: 2021-01-06 15:58:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24

MD5: 7135c8a507ff168b5fc00d9b2aba64ed SHA-1: 4ed31c4161e41671ed93f11fe8a2c8e7b9d1beeb SHA-256: c093e7ae9ffb065c32618968217eff4ffe858eec22a4a40e2e789cb3bbb3789f

242 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.8907

Heuristics 5

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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://cctraff.ru/aws?utm_term=greenland+melting+ice+sheet In PDF document text
- https://dumamawikop.weebly.com/uploads/1/3/0/7/130740251/1141833.pdfIn PDF document text
- https://wamibujobaju.weebly.com/uploads/1/3/4/7/134716207/zitefuvosu_tezusujik.pdfIn PDF document text
- https://mipapipav.weebly.com/uploads/1/3/4/0/134012398/3f72ceea98a72.pdfIn PDF document text
- https://degitetebumike.weebly.com/uploads/1/3/1/8/131857056/votisi-jodukoxaporen-zuretobod-sowubum.pdfIn PDF document text
- https://bixirugabo.weebly.com/uploads/1/3/0/9/130969405/22ac1f72d255cc.pdfIn PDF document text
- https://batabokisusixil.weebly.com/uploads/1/3/4/6/134689132/popaburigajiz.pdfIn PDF document text
- https://goraworozegisu.weebly.com/uploads/1/3/4/3/134324811/3189174.pdfIn PDF document text
- https://cdn.sqhk.co/ligilitojob/dpjPUgd/rotator_cuff_tendinopathy_recovery_time.pdfIn PDF document text
- https://wiwusazefaxowo.weebly.com/uploads/1/3/4/4/134457051/papenul-jofukusu-pajutije.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d7cccd79-0e5c-4788-9efc-6c1b2b558761/ultimate_ninja_blazing_apk_english.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7e387526-3c76-4c44-bc5a-6928b8451f80/tiber_river_map_of_italy.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f20b1901-1879-4890-b9bd-5659e3268a69/9254883577.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/887d33f4-9227-4548-91e9-31a9ce02a0f9/78977231583.pdfIn PDF document text

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