Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8c930ffb7a8d10b…

MALICIOUS

PDF

69.6 KB Created: 2021-02-10 04:12:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f4cb0a9eccfb14fb0e4824bac0328d73 SHA-1: 019cd685291acd6c9e7485445a24cb59070fcb21 SHA-256: e8c930ffb7a8d10b4f6a1507ba89adfa79532c021714b89e577d8664ee822e62
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 0.9914

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://bologen.ru/aws?utm_term=9mm+compressed+fibre+cement+sheet+sizes PDF link annotation
    • http://merishwheelrecords.com/pefozeturipeleroduxolonia8h6j.pdfIn PDF document text
    • https://vimasavugaf.weebly.com/uploads/1/3/4/5/134587410/6648424.pdfIn PDF document text
    • http://remontlegko.info/download_blumberg_x120_formje30k.pdfIn PDF document text
    • https://nunipotewisi.weebly.com/uploads/1/3/4/8/134892443/xegiz-wopetivimulivel-nuvilaf.pdfIn PDF document text
    • https://cdn.sqhk.co/wubunepan/gejghdF/52194196546.pdfIn PDF document text
    • http://smartbright.club/beowulf_graphic_novel_sparknotesby02i.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370540/normal_601a2fc43c3a3.pdfIn PDF document text
    • https://zinuwikisabarek.weebly.com/uploads/1/3/4/6/134679236/lepotes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377905/normal_6015d86da0180.pdfIn PDF document text
    • https://penotogales.weebly.com/uploads/1/3/1/4/131438478/d58066.pdfIn PDF document text
    • http://de-bewertung-id2842384.icu/490185497995z550.pdfIn PDF document text
    • http://itali-big.space/disney_pixar_up_theme_piano_musescore55c86.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wabalegawamiraj.rf.gd/velopebigudova.pdfIn PDF document text
    • http://rozipiliwune.epizy.com/wugabitegisowu.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/color_blindness_test_app.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/lujiwisavegifananorekaku.pdfIn PDF document text
    • http://xifonefoje.epizy.com/83733436523.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/apresolina_50_mg_bula.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/bobinage_transformateur_de_tension.pdfIn PDF document text
    • http://zemadepa.rf.gd/certificate_of_conformity_template_australia.pdfIn PDF document text
    • http://tefinavi.epizy.com/kogef.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_off0000ff18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF18 5404 bytes
SHA-256: 45eca76e0528531fcea36e3266e1a91fbc5e48151c0b99721027f88831dcd7df