Malicious PDF — malware analysis report

Static analysis result for SHA-256 6af48bef13fe8c57…

MALICIOUS

PDF

66.5 KB Created: 2020-11-22 11:15:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 9409ec8c358e03559a2b55b939d52cd7 SHA-1: 9ae915a643828e0dc9af00d8dad0febb6f0ed016 SHA-256: 6af48bef13fe8c57a3832caacb039c7a1388d268f8ab36b700e6bddca128bd96
214 Risk Score

Malware Insights

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

The file is a PDF that contains embedded links, one of which points to a known malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, suggests a lure related to financial freedom, aligning with phishing or scam tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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/123?utm_term=the+road+to+financial+freedom+pdf In PDF document text
    • https://nunoperiv.weebly.com/uploads/1/3/1/8/131856708/62b13ab8.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/tesasubawalozan/articulo_definicion.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/jfet_amplifiers.pdfIn PDF document text
    • https://s3.amazonaws.com/dorulusof/diabetes_diagnosis_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/neviwove/42368015122.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/95385867670.pdfIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/38899835584.pdfIn PDF document text
    • https://s3.amazonaws.com/rivazixexuguri/59640258382.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/amoxicilina_suspensao_bula.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/40309684729.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_off0000c8a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8A7 5164 bytes
SHA-256: 24512660e2d86497580fbf8a133c5ff7faa410a330aaf431e3f21c09ff97bc20
font_01_sfnt_off0000da10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA10 10324 bytes
SHA-256: 30b07ee208bc72df4fd995db0c532b777bfa38920a9951ca0cfa18e2ce66069b

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