Malicious PDF — malware analysis report

Static analysis result for SHA-256 53184e550123f481…

MALICIOUS

PDF

69.4 KB Created: 2021-06-02 13:51:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03b05fc01f9bde4d8d0b272803f8eb5b SHA-1: e8695368be43ed4885749229896df28bb8b10c41 SHA-256: 53184e550123f481e7a6190fa7c8e1462fe42660a6f16e58917f5f068157a3dd
154 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one prominent URL leading to a movie download lure. The ClamAV detection and ML classifier indicate malicious intent, likely for phishing or malware distribution. While no scripts were extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8381

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://wastran.ru/pbw?utm_term=skiptrace+full+movie+in+hindi+dubbed+download+filmywap
    • https://static.s123-cdn-static.com/uploads/4387715/normal_5fe338231d825.pdf
    • https://xulasimij.weebly.com/uploads/1/3/2/8/132814518/sekubiz.pdf
    • https://xinorexuvon.weebly.com/uploads/1/3/4/6/134608307/7ea6c8.pdf
    • https://vajawopi.weebly.com/uploads/1/3/4/5/134597817/fadawovi.pdf
    • https://cdn-cms.f-static.net/uploads/4411512/normal_6024f49d3b6d6.pdf
    • https://cdn-cms.f-static.net/uploads/4486778/normal_6017c41346795.pdf
    • https://movekepuvixoma.weebly.com/uploads/1/3/4/0/134041071/1398453.pdf
    • https://tatazopizen.weebly.com/uploads/1/3/1/1/131163492/1f96f409e44e6.pdf
    • https://siragakepog.weebly.com/uploads/1/3/4/8/134890789/58a709856902ac0.pdf
    • https://static.s123-cdn-static.com/uploads/4471945/normal_5ff50d8501438.pdf
    • https://fotularujofo.weebly.com/uploads/1/3/0/7/130739653/1624034.pdf
    • https://cdn-cms.f-static.net/uploads/4451049/normal_605b8c447677c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xoxafepapesu.pbworks.com/f/what_is_an_example_of_combined_variation.pdf
    • https://uploads.strikinglycdn.com/files/2276df85-8bcc-413b-a275-908cd037070b/how_to_train_internal_and_external_obliques.pdf
    • https://uploads.strikinglycdn.com/files/4c780cac-c908-4318-86c6-2c0aa1b17f2f/21029423307.pdf
    • http://garifukedako.pbworks.com/f/how_to_play_clash_royale_on_chromebook.pdf
    • https://uploads.strikinglycdn.com/files/6d579f31-5e97-48cb-935e-817200eeac56/gekugekuvopezokawi.pdf
    • https://uploads.strikinglycdn.com/files/12ca1dce-635e-4fbe-8ec3-16f1542ad7b8/56564699166.pdf
    • http://litorabi.pbworks.com/f/6571567225.pdf
    • https://uploads.strikinglycdn.com/files/f99e3783-5203-4eed-a497-1c2f11a12bc9/xudevobujavepozowovifarum.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef85.bin
1682c27f17540f632e2727143323c4ed7a7a63de54d8b31f1a87113147b65b96		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF85 5780 bytes

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