Malicious PDF — malware analysis report

Static analysis result for SHA-256 38c5532abeac660f…

MALICIOUS

PDF

61.6 KB Created: 2020-12-18 12:51:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: a61f8133b067c2c7860a0392c0b17bfd SHA-1: bb764ef2fbcdc84c35f46c0834cc4849ac802f00 SHA-256: 38c5532abeac660f033a27ac3c42c75e8d02d5b09f895774cb7d78cf901b19f6
96 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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://traffking.ru/strik?utm_term=sylvia+mcfarland+death PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375522/normal_5fa21f4c1e754.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453528/normal_5fbe7e59159c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369332/normal_5f920c168c581.pdfIn PDF document text
    • https://tazuwadafif.weebly.com/uploads/1/3/4/8/134857375/7e9df9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368228/normal_5f8b4f5677004.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378641/normal_5f9da3f22ac66.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403537/normal_5fc519f345654.pdfIn PDF document text
    • https://rokumetusemep.weebly.com/uploads/1/3/4/3/134382705/904093bb9864.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/lakujusitejojet/brackets_shortcuts_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/walametetojetiriduginu.pdfIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/dragon_quest_xi_marriage_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/99267587457.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a33d6d9a-bcea-4479-868f-8dc6bd7c38c0/48341935805.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_off0000b42a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB42A 5348 bytes
SHA-256: ca110226e9836490e82194563455de66e4081ef773804dd57bfe03797a284f03
font_01_sfnt_off0000c643.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC643 10524 bytes
SHA-256: 909007c0788515e0326e661aaea093a9819c56584a211ff5570ae47095224aa5