Malicious PDF — malware analysis report

Static analysis result for SHA-256 7132bf111f3971c7…

MALICIOUS

PDF

73.8 KB Created: 2021-01-16 17:41:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 67ae0db95bdc0cf011539699fe1abebe SHA-1: 72571b47fcdcf1a8d7c0fb2770089e54c9026f29 SHA-256: 7132bf111f3971c758b4bfc3ab175b927fcc9054b7373f8ad2de47267df62f11
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 redirection 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 infrastructure.

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
  • 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://traffking.ru/123?utm_term=the+lonely+island+tour+dates In PDF document text
    • https://cdn.sqhk.co/mujexoxa/sijjgsK/84733185677.pdfIn PDF document text
    • https://fojigexo.weebly.com/uploads/1/3/4/2/134235048/fd726b54e217.pdfIn PDF document text
    • https://gilinolejokakis.weebly.com/uploads/1/3/4/6/134632374/xituvuzajemesu.pdfIn PDF document text
    • https://zalawevovupat.weebly.com/uploads/1/3/0/9/130969727/a47c99e54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379837/normal_5f944550ae837.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421354/normal_5fab5619f1b0b.pdfIn PDF document text
    • https://cdn.sqhk.co/xufatirumina/jehOUid/gikulewabuxagovogor.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/vufuzewasi/tugosuwigatutumatoj.pdfIn PDF document text
    • https://s3.amazonaws.com/nawuvud/44091005905.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/cognitive_processing_therapy_for_ptsd_worksheets.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_off0000e44b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE44B 4964 bytes
SHA-256: 01f35b6a7fc1487e3c330fa1a669945e8c5ba37bd9b2a14248b993073fd7038e
font_01_sfnt_off0000f528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF528 10824 bytes
SHA-256: 181334e08d86c4085c2a14a75b53cf2b72f0cd266a483091f25fa9608a96a5a1

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