Malicious PDF — malware analysis report

Static analysis result for SHA-256 d28fa212c464a24e…

MALICIOUS

PDF

69.2 KB Created: 2021-01-13 08:35:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: b4cedaa8e8fa3cd99d536ab720751cfe SHA-1: d37676fee69495e7055bd9b6e0f62d6c9819860d SHA-256: d28fa212c464a24ef25e426ff6dcfbce7cda4dcda6c42209087a4a4e9614c33c
154 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffmen.ru/aws?utm_term=facebook+page+cover+template+2019'. This URL is likely used to lure users into a phishing or malware download site. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffmen.ru/aws?utm_term=facebook+page+cover+template+2019 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4445750/normal_5fdac55783847.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392871/normal_5ffe601555e2a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417656/normal_5fae944973c64.pdfIn PDF document text
    • https://cdn.sqhk.co/gasariba/iabJOOr/pac_12_championship_game_2018_espn.pdfIn PDF document text
    • https://site-1167928.mozfiles.com/files/1167928/poly_art_puzzle_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369646/normal_5f9cc6dbed153.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470228/normal_5ff29fc9e70c3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403822/normal_5fcc90f9e1865.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421466/normal_5fecc5e81ca6f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408464/normal_5fcafab3a3e1b.pdfIn PDF document text
    • https://site-1166749.mozfiles.com/files/1166749/first_4_words_of_the_declaration_of_independence.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/setaxilitozuko/plant_vs_zombies_2_plants_guide.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_off0000d0eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0EB 5776 bytes
SHA-256: 81dedf9460b3c0d7583858e93d828fd6b4cc9d55818d88fad6279196d78bb7ba
font_01_sfnt_off0000e48f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE48F 10396 bytes
SHA-256: 68d994f814b0bd47de9897fbc07aac84a2fdc57031edf58b7f98deb03c0ad879

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