Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf7d49ce63e73ea2…

MALICIOUS

PDF

73.3 KB Created: 2021-03-21 07:35:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04d596f6c3e6430736605a27594e9571 SHA-1: e6d0e04c1d6e1ff8b7f6073293cffee7cbb0e2b2 SHA-256: cf7d49ce63e73ea230b1e16ded138fb1cd462186dce021ccc1a7e45e3ffb3b77
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. The document body and embedded URI point to a lure for downloading a PDF, likely containing further malicious content or redirecting to a phishing site. The presence of embedded URLs suggests an attempt to deliver a second-stage payload or facilitate phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/award?keyword=antigona+furiosa+pdf+descargar+gratis
    • https://sazoxizifa.weebly.com/uploads/1/3/4/5/134505384/tuguwukufewuzijab.pdf
    • http://taxavifosobedul.iblogger.org/rinnai_heater_spare_parts_melbourne.pdf
    • https://cdn.sqhk.co/xiladuxe/jiuRhhb/armed_heist_apk_android_oyun_club.pdf
    • https://static.s123-cdn-static.com/uploads/4416151/normal_5fe1b192481c4.pdf
    • https://pigiwikabulate.weebly.com/uploads/1/3/1/8/131856715/5401194.pdf
    • https://cdn.sqhk.co/bitaxukezor/gfhfgiC/marketing_jobs_denver_nuggets.pdf
    • https://cdn-cms.f-static.net/uploads/4407997/normal_5fe8bc4c705d3.pdf
    • https://cdn.sqhk.co/govupasuti/icRPSew/azshara_quick_guide.pdf
    • http://jegipebor.iblogger.org/pubiwepazatinojiberokivu.pdf
    • http://resufomuvojos.22web.org/simple_html_registration_form_template.pdf
    • https://static.s123-cdn-static.com/uploads/4454672/normal_5fce28066bce6.pdf
    • https://zabaparadasikid.weebly.com/uploads/1/3/4/3/134317604/f5337b455f7f549.pdf
    • https://dofonumid.weebly.com/uploads/1/3/5/3/135314870/769bf4d.pdf
    • https://cdn-cms.f-static.net/uploads/4416790/normal_5fd0ee761a5be.pdf
    • https://gifolavetufo.weebly.com/uploads/1/3/2/6/132695571/5730548.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vevemaj.rf.gd/sistema_respiratorio_histologia_veterinaria.pdf
    • http://vulamexi.rf.gd/bow_tie_pasta_calories.pdf
    • http://datidogebe.epizy.com/wilub.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e280.bin
6a2acd491b76de4dde50341b211ca28aea4ec1346859f862e3bb0724f99a589b
pdf-font-stream PDF embedded font (sfnt) at offset 0xE280 5280 bytes
font_01_sfnt_off0000f493.bin
2f4c822a516fc6484c1a7c20b75bfef1b42c75d4e3128d1bf6f4bc82109a689a
pdf-font-stream PDF embedded font (sfnt) at offset 0xF493 10684 bytes