Malicious PDF — malware analysis report

Static analysis result for SHA-256 54f1c39be2966156…

MALICIOUS

PDF

82.7 KB Created: 2020-12-22 20:29:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: cf777b058522ed65e7ad8d90b8c69811 SHA-1: 7949a1c3a6d6ee3e07972360f83602381b9811eb SHA-256: 54f1c39be296615624e54dd5eb1aafbaf915d6c62e0b231f4aa8aa22bed799e9
154 Risk Score

Malware Insights

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

The file is identified as malicious by multiple heuristics, including a critical finding for a malicious redirector link. The embedded URL `https://ggtraff.ru/123?utm_term=squier+by+fender+bass` is a primary indicator of malicious intent, likely leading to a phishing page or malware download. While no scripts were explicitly extracted, the PDF structure and the presence of redirector links suggest an attempt to lure the user to malicious infrastructure.

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://ggtraff.ru/123?utm_term=squier+by+fender+bass In PDF document text
    • https://wotakipinamiwug.weebly.com/uploads/1/3/4/6/134687545/koxomuregema.pdfIn PDF document text
    • https://tawedituja.weebly.com/uploads/1/3/4/8/134864040/vaxelerotikafe_nigigi_pefefanudixeg.pdfIn PDF document text
    • https://tadivibudup.weebly.com/uploads/1/3/4/8/134899420/kegezataribu_zozesasubagabu.pdfIn PDF document text
    • https://nelejezubifub.weebly.com/uploads/1/3/1/4/131406077/xonut.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488133/normal_5fcc60c63059f.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/rekawexuretowo/bareboat_cruising_made_easy.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/favepovefenuxu.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/torchlight_2_embermage_prismatic_bolt_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5141627a199023ad05ad4/t/5fc7d4254bde7d3c2ce1a40c/1606931498057/34611719067.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/calendario_sep_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/petubapizo/ford_f150_2008_transmission_fluid_type.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/dmarc_office_365_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/lurex.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_off000106f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106F5 5340 bytes
SHA-256: 6dc9eb8a018128010c911b6affb9b47ff9508db05600629e84e4a11e58ac5128
font_01_sfnt_off0001192f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1192F 10808 bytes
SHA-256: 37a491a9704e420a972b2e8a5a8778626d34ebd4175153d005a2d4cfdaf7bebc

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