Malicious PDF — malware analysis report

Static analysis result for SHA-256 baa452732fd36f41…

MALICIOUS

PDF

75.6 KB Created: 2021-04-15 20:16:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 99fadaabe091ec434b581060fa756e8f SHA-1: d392fc72cd79b4c58345583d5429b09dc5d4c539 SHA-256: baa452732fd36f4193494f7b9bb8c8c6a3534fd3036f14f236a2f0b1bb584776
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, contains keywords related to a product, suggesting a lure for a phishing or scam campaign.

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://mezovuduw.ru/strik?utm_term=beats+solo+3+wireless+headphones+charger PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4450516/normal_5fca60e8b44ad.pdfIn PDF document text
    • http://oneitstore.pro/nezuzabawumaravevefibujef8tgqs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465908/normal_5ff3f5224e3ca.pdfIn PDF document text
    • http://repetitor-ru.ru/6187161422hja9v.pdfIn PDF document text
    • http://harmony-market.ru/calla_lily_bouquet_diyrx71h.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405652/normal_5fec1cc47c45c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374688/normal_603f64da5cf80.pdfIn PDF document text
    • http://bemelegevew.22web.org/fedatavabodexavadinuruba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384647/normal_5fe64caeb1b12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459059/normal_604def22b68dc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411686/normal_5fde69b8e15d2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384308/normal_5ff27286f3b56.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386607/normal_5ff9a59dcbe04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460678/normal_603f0ad714ea3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d134a1c-767a-4406-921b-cdb636479728/how_to_connect_elgato_hd60s.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c6f5a3a-9097-44cb-a3d0-0b74fc3c344c/91544679454.pdfIn PDF document text
    • http://fafanuzumamowaz.epizy.com/juduniki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/129aa9a4-5241-4a1c-94e0-295cef4b7b67/how_much_can_you_make_with_a_masters_in_biology.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49917c0b-acd4-4423-91d2-355b9747fc2b/91590317246.pdfIn PDF document text
    • http://vebegab.rf.gd/kopesuxereborisixeduge.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In 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_off0000e84a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE84A 5640 bytes
SHA-256: 7e7baafa684246fd9a289fd9f46d8bd7ba346a53184f9f30c1deed96d10256b1
font_01_sfnt_off0000fb82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB82 10980 bytes
SHA-256: cff3d29cfffbf92fb2a88b8a46466b8a05374c673a100d7a73d595a3047caccd

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