Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa84070c1e3bbdfb…

MALICIOUS

PDF

74.6 KB Created: 2021-02-19 18:45:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 70ff5b030f84d58e3ef188d519dca603 SHA-1: a6171bb0b7a916cdf04ca58423d093bb3e43b60a SHA-256: fa84070c1e3bbdfbbc1e0365fbf847003adbab438d68f065d4d6d19c8aefca92
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing lure designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/strik?utm_term=how+to+drain+a+whirlpool+front+load+washer In PDF document text
    • http://bella24.xyz/mewozesidebetazenugegiwou7pg8.pdfIn PDF document text
    • http://lnstagramsecurity.net/google_chrome_64_bit_windows_86a5k0.pdfIn PDF document text
    • http://copyrightsupport-ig.com/58359254274y1kj7.pdfIn PDF document text
    • http://lnstagramsecurity.net/wubuvafetomupuk5p2d.pdfIn PDF document text
    • http://discount50.pro/7803285209939r38.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379982/normal_5febe8900303b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gomaxod/kufululoramamevu.pdfIn PDF document text
    • https://s3.amazonaws.com/lemerisinivum/rent_guarantor_form_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tinezedu/atcc_hepg2.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/93707838108.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/rofuwatavanawabed.pdfIn PDF document text
    • http://nupakavidowux.epizy.com/formule_semi_dveloppe_du_dioxyde_de_carbone.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/62646079757.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/barbie_games_apkpure.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_off0000e129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE129 5180 bytes
SHA-256: 81eb4f9b2adaeacf87890736101c3c8ff92104564171a98a866c8b8b05a78e9d
font_01_sfnt_off0000f2d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D2 13188 bytes
SHA-256: 95c9f8e4cc3623d08d38ee089cba4314ae3afc3a0bfa3d86cbca0627b8b73c50

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