Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae9d1ff4f102aa36…

MALICIOUS

PDF

71.3 KB Created: 2021-05-22 19:00:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e9b5efb87604021b47b88348a2ef50c8 SHA-1: 24065798b27d7891d6b09c684c996dc58aea6e13 SHA-256: ae9d1ff4f102aa36bf785ff190f16a4fbe073da87ca81242f08727687f67446c
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by multiple heuristics and a machine learning classifier, indicating it is likely a phishing or SEO spam lure. The document contains a large number of embedded external links, many pointing to other PDF files, suggesting a link farm or redirection mechanism. The primary URL identified is https://mezovuduw.ru/wb?keyword=the%20scarlet%20pimpernel%20tv%20series%201999%20watch%20online, which is likely used to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9665

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://mezovuduw.ru/wb?keyword=the%20scarlet%20pimpernel%20tv%20series%201999%20watch%20online
    • https://static.s123-cdn-static.com/uploads/4418963/normal_60003baa04cd9.pdf
    • https://static.s123-cdn-static.com/uploads/4410433/normal_6000c4c0a9f02.pdf
    • https://static.s123-cdn-static.com/uploads/4389809/normal_5ffe8d3e3d6d4.pdf
    • https://cdn-cms.f-static.net/uploads/4368782/normal_605228e2a1ce9.pdf
    • https://static.s123-cdn-static.com/uploads/4381104/normal_60006d453ea5b.pdf
    • https://laboxowoxom.weebly.com/uploads/1/3/5/4/135400847/vapetega_lolabasivunis_fewijuromojix_vugumuxet.pdf
    • https://cdn-cms.f-static.net/uploads/4445544/normal_5fd7f0ea37ab3.pdf
    • https://cdn-cms.f-static.net/uploads/4449777/normal_606c3e49d621f.pdf
    • https://cdn-cms.f-static.net/uploads/4382407/normal_60305280633c8.pdf
    • https://cdn-cms.f-static.net/uploads/4455658/normal_604b3304bd2eb.pdf
    • https://cdn-cms.f-static.net/uploads/4453907/normal_60600015a4ea1.pdf
    • https://cdn-cms.f-static.net/uploads/4480893/normal_601315d6d4c91.pdf
    • https://cdn-cms.f-static.net/uploads/4415962/normal_603c2fc8d1862.pdf
    • https://xonesomo.weebly.com/uploads/1/3/0/7/130739362/7798698.pdf
    • https://fetesebi.weebly.com/uploads/1/3/4/8/134896421/tanulonomegoparozut.pdf
    • https://cdn-cms.f-static.net/uploads/4444098/normal_601484dbeec09.pdf
    • https://cdn-cms.f-static.net/uploads/4486963/normal_600dff9c0df75.pdf
    • https://pifofunota.weebly.com/uploads/1/3/0/8/130814871/niwoxu.pdf
    • https://cdn-cms.f-static.net/uploads/4366957/normal_6040ffc897cad.pdf
    • https://static.s123-cdn-static.com/uploads/4465538/normal_6008490251b09.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/21d9f0bd-8aba-4c59-b617-43658b6db490/manual_camara_canon_powershot_sx700_hs.pdf
    • https://uploads.strikinglycdn.com/files/b001fbe2-4570-4bc1-873b-317f5305b9e3/why_citizen_kane_is_the_best_movies_of_all_time.pdf
    • https://uploads.strikinglycdn.com/files/712af6bf-fe80-4d2d-84c8-c9677c75e536/64729874768.pdf
    • https://uploads.strikinglycdn.com/files/72bc6842-49d3-4ee3-9803-de1923a186d7/kijajedapotare.pdf
    • https://uploads.strikinglycdn.com/files/a6988e76-fd90-4e7e-9b11-e958c4ed98cd/kovazibuwagimejotibu.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efcb.bin
5c88a3c56c5a0bfa854e3cfb63bce1e29b34a4a7524e3fe27f6d535c7198b030		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEFCB 5484 bytes

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