Malicious PDF — malware analysis report

Static analysis result for SHA-256 405f425bc026b238…

MALICIOUS

PDF

94.1 KB Created: 2021-03-18 21:28:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 60a12addd9361d706f980c09439c8cb4 SHA-1: ea2eb9d30e0514f5f3120d36ea3252639982a1b4 SHA-256: 405f425bc026b238ae777e07ff6c563f834b74dd8d1c2a46fb2192efd828b11f
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6286

Heuristics 4

  • 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 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://soxebez.ru/award?keyword=anesthesia+machine+checklist+pdf PDF link annotation
    • http://jolixasij.sportsontheweb.net/72949905463.pdfIn PDF document text
    • http://xrootunited.com/41962016874mivpp.pdfIn PDF document text
    • http://help-feedback-amzn3.xyz/carcinogenos_quimicosaj3np.pdfIn PDF document text
    • http://ru-dev.xyz/66522214558vdmom.pdfIn PDF document text
    • http://sawedes.mywebcommunity.org/esl_prepositions_of_place_worksheets_adults.pdfIn PDF document text
    • http://sportplays.ru/58821451465iqthx.pdfIn PDF document text
    • http://irbestate.ru/dremel_395_switch6ink9.pdfIn PDF document text
    • http://alania365.ru/51450138316e1w02.pdfIn PDF document text
    • http://libuwapuvewipev.mywebcommunity.org/lectures_on_tung_s_acupuncture_points_study.pdfIn PDF document text
    • http://relibafogat.sportsontheweb.net/how_many_calories_in_taco_bell_grilled_chicken_soft_taco.pdfIn PDF document text
    • http://hermidkovo.info/english_vocabulary_for_beginners_worksheets_grade_3fuqs5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://917ed8d3-8a9f-4c5c-a3ad-554e533308ad.filesusr.com/ugd/a4e402_5300bba0a31e438bba59653e44082e85.pdf?index=trueIn PDF document text
    • http://faxanudof.epizy.com/nbn_hfc_installation_guidelines.pdfIn PDF document text
    • http://vapugoluz.rf.gd/wenijolufu.pdfIn PDF document text
    • https://s3.amazonaws.com/nademopor/30677903341.pdfIn PDF document text
    • https://b615eccc-4413-4b1d-8109-ede925130a83.filesusr.com/ugd/0994f9_a4d6d8694522474b93b3a41b74a3692f.pdf?index=trueIn PDF document text
    • http://voxafizuvukulam.epizy.com/mapleroyals_ice_lightning_training_guide.pdfIn PDF document text
    • https://52f9d6e5-2fd5-4906-a030-4d12f703b62a.filesusr.com/ugd/297ecd_559880fee2984c599068784ed9430dec.pdf?index=trueIn PDF document text
    • https://f039f7e9-c7fa-441d-bf3d-2f0e35d6be10.filesusr.com/ugd/80685d_8ce85a3ebc3241259c99398fca5154b0.pdf?index=trueIn PDF document text
    • http://romepasuv.myartsonline.com/81053547517.pdfIn PDF document text
    • http://sabukizazuse.epizy.com/98046558789.pdfIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/honda_accord_2008_service_repair_manual.pdfIn PDF document text
    • http://bigagapafobari.rf.gd/lemosikekedozapegul.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014bd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14BD7 5352 bytes
SHA-256: 52a55252fbcfe3cf48710131458b96d33d62f376d9e75695d52c2bfce0c6a839

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