Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d80d9ac279d5dd8…

MALICIOUS

PDF

62.2 KB Created: 2020-12-21 13:37:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 92a3075d84040193a0c3a9090894f6c2 SHA-1: 726e2965c7322f315cd497c830c96ad0a2477d42 SHA-256: 9d80d9ac279d5dd8e76da91c7a702d7a659f5ed76f58cdcd2c21127174685dad
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document has been flagged as malicious by multiple heuristics and an ML classifier. It contains a large number of embedded links, with at least one identified as a redirector to malicious infrastructure. The presence of a link farm suggests an attempt to distribute malicious content or conduct phishing attacks. The document body is heavily obfuscated and unreadable, providing no further context.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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/strik?utm_term=diskon+diamond+via+id In PDF document text
    • https://zuxolizaf.weebly.com/uploads/1/3/2/7/132740519/97a4a25403a9a0.pdfIn PDF document text
    • https://zujuwedidikaf.weebly.com/uploads/1/3/4/3/134375258/duwinukif.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/5fc0ec6c8787e879896c16ae/t/5fc2b8aae18c5c478e54fcfc/1606596778231/osrs_aberrant_spectres_gear.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc68877bd14ff0dd2c36e41/t/5fcb56311ef6d1662fed1dde/1607161393959/warlings_armageddon_hack_apk_todo_desbloqueado_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/lopazura/wemelobujute.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c07c5c74-444e-47e4-bfda-31f29ecbea4c/susedemalipuvem.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdfd92f5b7bc96605610b65/t/5fdfe20d8afbbc271780cf26/1608507918034/carbon_dioxide_symbol_form.pdfIn PDF document text
    • https://s3.amazonaws.com/joterige/joneki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee1bbaeb-0915-4057-b3c0-78d8a0e14cd7/difelareset.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc38024e2fce462bc9c67ee/t/5fccfc7f978da30c56ffb283/1607269509550/sawevolitiroxozan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c31fba9-85ac-4e21-a0fb-e8fe9b19dfc0/84196438429.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd37885b7bc966055e0d98/t/5fddcb6d2baf317dc383e1c4/1608371058068/51278828534.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b481850-238c-41d2-acb5-dbc630ef1c5b/movies_free_-_play_hd_box_office.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c3860fb-2400-4a76-8be5-13d6633d16eb/ruger_security_six_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61384db4-8f22-4d1e-b227-a7bf2d150c6e/52118982509.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_off0000b6bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6BB 4968 bytes
SHA-256: e4b4293516d54166435c8cce38d1d3fd0844500c16ebb87fdd6be06dd4718f86
font_01_sfnt_off0000c7a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7A3 10736 bytes
SHA-256: bd842bef5172633db160e0347bbd03ccd3eb6dc36a610fe773be734c42777eb5

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