PDF malware analysis — malicious · f1a9d79a2ae0cf4b

MALICIOUS

PDF

49.6 KB Created: 2021-04-01 17:28:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27

MD5: 19a5f4ead706d3c97374bda8d54962a2 SHA-1: de11e732c3f2c949dcf906e1ae44eedf3bf2b4ac SHA-256: f1a9d79a2ae0cf4b68e2f6e3fd45ffcf4e5c00008b6ac8b73b30f4b16372d2bb

184 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing attempt. The document body is heavily obfuscated and contains metadata indicating it was generated by wkhtmltopdf, a tool often used to create PDFs from web content, further supporting the link farm hypothesis.

Machine Learning

Nyx PDF Classifier malicious score 0.7360

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
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.
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://nipisod.ru/aws?utm_term=adjudication+vs+arbitration+singapore PDF link annotation
- https://cdn.sqhk.co/jozojonujaj/gSShKtb/zegajejigibodijorega.pdfIn PDF document text
- https://bexusisase.weebly.com/uploads/1/3/4/5/134596812/kibisiw_jeparot_kumob.pdfIn PDF document text
- https://dufavepuxafolim.weebly.com/uploads/1/3/4/2/134266173/tidajerub_leruxup.pdfIn PDF document text
- https://gaxasexafarud.weebly.com/uploads/1/3/4/5/134590452/0b43b787.pdfIn PDF document text
- https://cdn.sqhk.co/nojumuku/gjjhjfr/selakukaxufe.pdfIn PDF document text
- https://wixuzezokanozav.weebly.com/uploads/1/3/4/6/134663812/7563711.pdfIn PDF document text
- https://pikelevadesos.weebly.com/uploads/1/3/1/3/131384679/vosesevusigafa_fexakazameza_libipotepomekup.pdfIn PDF document text
- https://mabunamu.weebly.com/uploads/1/3/4/9/134902385/liforisukimana.pdfIn PDF document text
- http://dalurekawo.iblogger.org/sexeruxukesinokuzonu.pdfIn PDF document text
- https://nigupisotaku.weebly.com/uploads/1/3/4/3/134374455/xokevata_zumasig_tovakafubovesox_toxalupiripi.pdfIn PDF document text
- http://jakiduve.scienceontheweb.net/back_to_back_stem_and_leaf_plot_worksheet.pdfIn PDF document text
- https://cdn.sqhk.co/lipebefaje/5Limhg0/airtel_direct_recharge_plans_2020.pdfIn PDF document text
- http://biwovake.rf.gd/hd_movies._com_bollywood.pdfIn PDF document text
- http://xizuzukafipobeb.epizy.com/nububakedeva.pdfIn PDF document text
- http://padegijogul.atwebpages.com/zenovirozemasipod.pdfIn PDF document text
- http://tazefuwavubu.rf.gd/zupurevisavumepemafage.pdfIn PDF document text

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