Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e7dd6bc4c8bb023…

MALICIOUS

PDF

69.8 KB Created: 2020-12-25 14:21:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 1cd8b1c236f4d139d57f6179d0fca8a8 SHA-1: 69c7f3a327ac87558f85d808fa26d14d864b20dc SHA-256: 1e7dd6bc4c8bb02314ad3e9a0dc1c586c5b6ead5712f5303e3282ccc43358f67
154 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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/123?utm_term=c%2523+wpf+books+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4384647/normal_5f97ed4d45fe1.pdfIn PDF document text
    • https://cdn.sqhk.co/kitaparek/jbhfehg/11935143680.pdfIn PDF document text
    • https://cdn.sqhk.co/dabeluza/jnYigOu/super_contraption_maker_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/jilanukubok/Pge2Dt4/dragon_quest_11_casino_cheat.pdfIn PDF document text
    • https://cdn.sqhk.co/nalogigoke/orK64ji/easy_cake_icing_recipe_with_powdered_sugar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448113/normal_5fa9402716e94.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391009/normal_5fe1da26b86a1.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/lofese/pradeep_biology_class_9.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/56994413206.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/84916655893.pdfIn PDF document text
    • https://s3.amazonaws.com/jevelel/guided_meditation_music_for_anxiety.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/iesna_lighting_handbook_9th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/bralette_sewing_pattern.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_off0000d8d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8D6 4064 bytes
SHA-256: a7ba64f301e596f3813fbdba42f4d10ba7ca3c4c4084d08a71c9ae320d82a630
font_01_sfnt_off0000e6a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A5 10704 bytes
SHA-256: 9163af6b1a454bdd0816c280cd686428ee93b3cdf7a657f890c6feadfeefceaa