Malicious PDF — malware analysis report

Static analysis result for SHA-256 b929b2cc862ecc2a…

MALICIOUS

PDF

50.4 KB Created: 2020-12-04 04:15:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: deb4e7720cc97a11d122782b9f3bc457 SHA-1: 7b8b0cae6c49893434e6f10372702407d732c944 SHA-256: b929b2cc862ecc2aa2f379a4748d6dafafe9b973bd79145e6226ee26e035a753
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or redirection scheme. The primary URL, 'https://trafffe.ru/strik?utm_term=qwik+pack+and+ship+medford+nj', is likely part of a phishing or malware distribution campaign. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7962

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafffe.ru/strik?utm_term=qwik+pack+and+ship+medford+nj
    • https://jevamupoledi.weebly.com/uploads/1/3/4/7/134712268/1068430.pdf
    • https://lorufolirosob.weebly.com/uploads/1/3/4/5/134584190/tuleputilenu.pdf
    • https://kokexofagisukop.weebly.com/uploads/1/3/2/7/132710589/79297.pdf
    • https://rodefakuwutepez.weebly.com/uploads/1/3/4/3/134341390/tagefe.pdf
    • https://winugemu.weebly.com/uploads/1/3/1/0/131070294/3e80d059247ea0b.pdf
    • https://fimagokuzite.weebly.com/uploads/1/3/4/6/134681622/219772.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jamokaroxoj/sequence_and_series_bsc.pdf
    • https://s3.amazonaws.com/leteraxewe/simple_present_tense_yes_no_questions_exercises.pdf
    • https://uploads.strikinglycdn.com/files/c636c418-a0c8-41c1-8693-a3aaa7ce2ea6/radisorapok.pdf
    • https://static1.squarespace.com/static/5fc2fe06403f5353fda36cb8/t/5fc44e409d793648401748ae/1606700608356/northwest_territory_front_porch_tent_owners_manual.pdf
    • https://uploads.strikinglycdn.com/files/2545768e-b65b-4f77-9345-ae98319232d8/99639716423.pdf
    • https://static1.squarespace.com/static/5fc54343116eb00e3c68afb8/t/5fc9370b67236c5514531dcd/1607022348100/download_goons._io_knight_warriors_mod_apk.pdf
    • https://static1.squarespace.com/static/5fbfd1e0c89e1c4b8fb81223/t/5fc8247913de6e79814f4c5c/1606952058833/53571723827.pdf
    • https://static1.squarespace.com/static/5fc1c3d140f1034a5caf136a/t/5fc5681661e25426e1edc52d/1606772759305/lojikutevazufofiz.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b30e.bin
ba587b4fc8c2ee055788354d8bf6db7973bbab9a0e22f5f25f314efba1647f7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB30E 5656 bytes

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