Malicious PDF — malware analysis report

Static analysis result for SHA-256 45215d4247d01088…

MALICIOUS

PDF

59.4 KB Created: 2020-12-16 12:01:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 1932654849f71c7c8c1dee493fbbb2d2 SHA-1: c08f19bcdab24bbad4325f53410b95c2459430ba SHA-256: 45215d4247d010886e9fc5cf154512aa9c55f6efee5816524080a02591d4bfbe
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'traffset.ru', which is likely used to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains text that appears to be a lure related to a 'talent calculator'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://traffset.ru/strik?utm_term=wow+tbc+talent+calculator+deutsch PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465262/normal_5fa95731c315f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369914/normal_5f9a0f74c4139.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385197/normal_5fba3322a8a94.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403808/normal_5fcd55aa15ed4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457839/normal_5fc1f3c7c97be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427544/normal_5f9f781e36120.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424672/normal_5f975faa2f3a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404293/normal_5fd27ee1ade87.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449777/normal_5fcbd172041ba.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc54e01085bf90c0e1a4b0c/t/5fc631b09b1ed03538b0cd8b/1606824368859/identity_verification_unemployment_ohio.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5667fa04221c71175960/1606375015934/building_a_concrete_ramp_for_a_shed.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d70dc14dfd36fef128e0/t/5fc2a30de6d49a06bbe9224e/1606591245482/98058911833.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/amenaza_de_parto_pretermino_barcelona.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f27ea13a450babf44921/t/5fc2740764571256548b8449/1606579210195/elephant_skin_boots.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/porepafosexufodexazizim.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5b6588ef7301f8b31e9ed/t/5fcadae2a3bc3d1915223ab9/1607129826625/30114771855.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_off0000b06f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB06F 5272 bytes
SHA-256: 5779665d0c88dd8166a72568057cbaf6fa4e2913e199155086e2a4984c1e9627
font_01_sfnt_off0000c266.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC266 8892 bytes
SHA-256: 4fa584bc87ba1c64079ad47c6fc18ee627c94d4973bc045aef95acb550f13cc7

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