Malicious PDF — malware analysis report

Static analysis result for SHA-256 6da0a1c18032ab39…

MALICIOUS

PDF

73.6 KB Created: 2021-02-28 03:25:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ae69c8788e33d2cf2740b268d9cb06db SHA-1: fbadf96b4f3cb92ef5d2dd24dee2d0737a67b9a8 SHA-256: 6da0a1c18032ab39a9d66f941f673f21e6f7a2eef7f95c8e057dedd920e44a58
124 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.8293

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://jumiwimov.ru/award?keyword=how+to+recover+from+abandonment+trauma PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4502493/normal_5ffa68317efd4.pdfIn PDF document text
    • http://sakulog.sportsontheweb.net/wegipadaxejebizawib.pdfIn PDF document text
    • http://remontlegko.info/841673239264b6o0.pdfIn PDF document text
    • http://nidikasuzarola.iblogger.org/41567043030.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476434/normal_5fd339b0e4eba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451206/normal_5fd9ab8c52962.pdfIn PDF document text
    • http://guwodela.iblogger.org/avaricious_adjective_form.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385620/normal_5ff0f8312a5d5.pdfIn PDF document text
    • http://zalavsky.ru/80468207884eqnl.pdfIn PDF document text
    • http://xajoraxi.22web.org/36179049039.pdfIn PDF document text
    • http://onlyforyou.space/woduwotijopebamw9nb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wusipoz.rf.gd/spreadsheet_in_excel_locked.pdfIn PDF document text
    • http://luvewon.epizy.com/asia_political_map_outline.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/86489395347.pdfIn PDF document text
    • http://voxafizuvukulam.epizy.com/libro_cuando_las_cosas_malas_le_pasan_a_la_gente_buena.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/basic_accounting_in_tally_erp_9.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/sabebonamumekefip.pdfIn PDF document text
    • https://s3.amazonaws.com/bakoloj/3818215463.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_off0000ea6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA6C 5044 bytes
SHA-256: adae574d22748c9bf7b35f84379365fb94e141878e58d1bde1823618303e15e0
font_01_sfnt_off0000fb80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB80 10736 bytes
SHA-256: a42b54a2059136104b8e72ec710ff031a7ec9260bc148eed2c7226137f330ce9

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