Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e3db0977ebc7ef3…

MALICIOUS

PDF

58.6 KB Created: 2020-11-11 08:41:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 92d598ef2f3ce4bbaa97bba277ec976a SHA-1: b8d156756ad0baff38b8c4c20840489fbded905a SHA-256: 6e3db0977ebc7ef321d48ad758aca9c5b7eea2a5556d917902feb65cdd7b7eb8
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 0.9996

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
  • 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/strik?keyword=nibah+episode+1 In PDF document text
    • https://fofoxugijajeb.weebly.com/uploads/1/3/4/7/134729320/jisinupebap.pdfIn PDF document text
    • https://panidulupeju.weebly.com/uploads/1/3/0/9/130969186/xisilebisisod.pdfIn PDF document text
    • https://vogoworelo.weebly.com/uploads/1/3/4/2/134266182/jiwip_duvafof.pdfIn PDF document text
    • https://wojedebaroz.weebly.com/uploads/1/3/1/6/131637691/bipilule.pdfIn PDF document text
    • https://delutezebojuk.weebly.com/uploads/1/3/4/3/134353455/kavis.pdfIn PDF document text
    • https://mitixofixomu.weebly.com/uploads/1/3/4/3/134333727/9254629.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/wonoti/wumujexalasoboduse.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/35447220253.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/binudunizevajazatezufu.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/11265528663.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/excelsior_middle_school_byron_ca.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/78915209875.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_off0000a97e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA97E 5080 bytes
SHA-256: 8902e8aa2e5fa9a36dd52c03f330a5f5a82e7f7ac2838e5d62dafb2d55227a9f
font_01_sfnt_off0000bac4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAC4 10452 bytes
SHA-256: d25ae4a010ae74651d4713d7f793398fdc780fc39280274ea6f75400f0af6d73

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