Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bce59c413c8d998…

MALICIOUS

PDF

75.6 KB Created: 2021-05-14 09:53:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: b9e461180eb87b70e1416e36fbc8a796 SHA-1: 336783ca460f2cc5f8fd7c82238474dadb37db96 SHA-256: 3bce59c413c8d9984796a4d840ca26b2157f9e4dc6bee31d158efd7f853319a1
166 Risk Score

Malware Insights

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

This PDF document is identified as malicious by multiple heuristics, including an ML classifier and ClamAV, and exhibits characteristics of an advance-fee scam. It contains numerous external URIs, with a primary one being https://soxebez.ru/strik?utm_term=washington+state+lotto+winners, likely intended to redirect the user to a phishing or malware distribution site. The document's structure and content strongly suggest a lure for financial fraud.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.
  • 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://soxebez.ru/strik?utm_term=washington+state+lotto+winners PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4419425/normal_606dd8dd2b7a2.pdfIn PDF document text
    • https://sovufejado.weebly.com/uploads/1/3/0/7/130740048/4618517.pdfIn PDF document text
    • https://zezogilak.weebly.com/uploads/1/3/0/8/130874046/c5f25a478.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378170/normal_6038bd4219923.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389084/normal_5ffc86cf162e3.pdfIn PDF document text
    • https://wuxipatinux.weebly.com/uploads/1/3/4/6/134662372/8501716.pdfIn PDF document text
    • http://jijoxep.getenjoyment.net/esl_appearance_worksheet.pdfIn PDF document text
    • https://wutuzorul.weebly.com/uploads/1/3/5/9/135963099/2a800dd2b356f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464521/normal_5fee1b636d13f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410199/normal_600005399032b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449618/normal_605c4ec009035.pdfIn PDF document text
    • https://cdn.sqhk.co/vewukiziwemi/dhda1jg/warrior_weekend_meaning.pdfIn PDF document text
    • http://wunadimizurened.medianewsonline.com/statistical_quality_control_mahajan.pdfIn PDF document text
    • https://cdn.sqhk.co/tabuguran/hhgtjch/fill_small_holes_in_plaster_walls.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489969/normal_6001f46d4674a.pdfIn PDF document text
    • https://widowajezow.weebly.com/uploads/1/3/4/5/134584852/2ed0b1ef7.pdfIn PDF document text
    • https://cdn.sqhk.co/nesadatifu/jZP1oTU/star_wars_rebels_ahsoka_lightsabers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480753/normal_605db6bc2c1c2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ea2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA2A 5052 bytes
SHA-256: ba61cb01e8451965d146f1f796a25cc6497714139cc2feb01ab5209866ef21f5
font_01_sfnt_off0000fb6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB6C 11056 bytes
SHA-256: bba4e4cbcbe668193a87a7408988d6736d1466c86a778663552b2b5c49dbfc06

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