Malicious PDF — malware analysis report

Static analysis result for SHA-256 202e7d4ec982ed58…

MALICIOUS

PDF

85.9 KB Created: 2021-03-01 00:46:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 8ab81676121a383070a36b83c426d937 SHA-1: 464ec186a245988ed3b91aa3ea8bd600c429a66f SHA-256: 202e7d4ec982ed5857e7434f77f79d97dfde8fa222bbf41888db955ec3855836
156 Risk Score

Malware Insights

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

The PDF document contains numerous external links, suggesting it is part of a link farm designed to improve search engine rankings for specific keywords. The primary URL points to a page about trading options, indicating a potential phishing or scam lure. ClamAV and ML classifiers also flagged this PDF as malicious, supporting the assessment of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9370

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://jacksth.ru/award?keyword=how+to+get+approved+to+trade+options+on+fidelity PDF link annotation
    • https://zofigaxukinepir.weebly.com/uploads/1/3/4/2/134235574/zinugaxavipigalajeb.pdfIn PDF document text
    • https://buzixigadojaw.weebly.com/uploads/1/3/5/3/135316262/lukanezimugefi.pdfIn PDF document text
    • https://babotiditufo.weebly.com/uploads/1/3/4/6/134694550/xusaba.pdfIn PDF document text
    • https://kojigoromemopem.weebly.com/uploads/1/3/4/0/134000229/nugulinazaramepa.pdfIn PDF document text
    • https://pufinixebajev.weebly.com/uploads/1/3/0/8/130873949/rokowon-nebize-xazatotozet-tunonizuwuro.pdfIn PDF document text
    • https://gokajafiwewafij.weebly.com/uploads/1/3/4/3/134314986/28e428979a.pdfIn PDF document text
    • https://votivugaxowo.weebly.com/uploads/1/3/1/1/131163932/8864522.pdfIn PDF document text
    • https://fodukajanewirom.weebly.com/uploads/1/3/5/3/135383911/2472ab567ef296.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://besuwodusibix.rf.gd/audubon_field_guide_to_north_american_birds.pdfIn PDF document text
    • https://s3.amazonaws.com/xetasif/suximezezakomesuvi.pdfIn PDF document text
    • https://s3.amazonaws.com/rixevozajixezos/38474828337.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/assignment_agreement_format.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/89103409222.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/11107950186.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/78611656121.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/piano_4_hands_free_sheet_music.pdfIn PDF document text
    • http://dujizadixupodur.epizy.com/56254483960.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011e22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E22 5424 bytes
SHA-256: 46d1dfcbcba2343f930e3a0a44dfcf600b2464649985dce41d2f7136fcfd660c
font_01_sfnt_off000130c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130C7 10980 bytes
SHA-256: 47d96ab070bf3678c25eb55413e0d890aa2594fed1620481ea3baa05e0065a6f

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