Malicious PDF — malware analysis report

Static analysis result for SHA-256 64d1558df9e9a163…

MALICIOUS

PDF

80.5 KB Created: 2020-11-20 08:44:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fbf64762e4facbfadd1812d1d01a0ba2 SHA-1: 7be51082f0db6f3454ef89559412c4fdb68c412c SHA-256: 64d1558df9e9a163a863e218634e2fb7850cbadc31aa7c9c99cf7770c4a1ef79
304 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF file is identified as malicious due to its function as a link farm and credential phishing lure impersonating the 'Target' brand. It contains numerous links, including one pointing to known malicious redirector infrastructure at 'traffmen.ru'. The document's primary purpose appears to be directing users to external sites for malicious activities, likely credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://rigokapine.weebly.com/uploads/1/3/4/5/134593974/2315318.pdf.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://traffmen.ru/aws?utm_term=momentum+calculations+worksheet+with+answers In PDF document text
    • https://rigokapine.weebly.com/uploads/1/3/4/5/134593974/2315318.pdfIn PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/47292360a0.pdfIn PDF document text
    • https://nudomituge.weebly.com/uploads/1/3/4/6/134677479/palosanoka.pdfIn PDF document text
    • https://funovupudejo.weebly.com/uploads/1/3/4/4/134473131/genexalamax.pdfIn PDF document text
    • https://digonowokeke.weebly.com/uploads/1/3/1/8/131856318/kulow.pdfIn PDF document text
    • https://bibitoxi.weebly.com/uploads/1/3/4/6/134653780/968f46b79241.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/xejaxew.pdfIn PDF document text
    • https://sabijodamibig.weebly.com/uploads/1/3/0/7/130775907/pipogowe-xenemezidaf-bukinebe.pdfIn PDF document text
    • https://s3.amazonaws.com/bizamesuwepe/35922581109.pdfIn PDF document text
    • https://lodiwuziwinum.weebly.com/uploads/1/3/4/5/134502140/9944327.pdfIn PDF document text
    • https://tanezogifa.weebly.com/uploads/1/3/4/3/134321065/tumodifado.pdfIn PDF document text
    • https://defifipak.weebly.com/uploads/1/3/4/4/134442047/nekugulunorixu_murotavadofa_nopawukabemom_dofedabe.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/e229a030-774c-4a1c-9dab-cd72100e0761/bonivixalukawopuxufixezap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f4645ad-fc76-4b66-a889-050ef1e3c5a5/1487907500.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f388.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF388 2828 bytes
SHA-256: b7f317aa0f29cd34df008dc84d8f376d2685882a57a4a5cd0d86477d0adf885a
font_01_sfnt_off0000fd83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD83 5200 bytes
SHA-256: 19993246260e09f961e79fc3e9c0c948cc249cbe988a9d31a206ef3f13dc7447
font_02_sfnt_off00010f1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F1D 10456 bytes
SHA-256: 86d4cbdd561c40fffd51e1a43f1b53cb2bcd0e4bd751bb60836d9df764cdaef6