Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d90c29379c1ba4b…

MALICIOUS

PDF

61.2 KB Created: 2020-12-23 03:44:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 1623d13ecf3cb0895821d55f007ad111 SHA-1: 23781d1290c745aecd9fc805ba454bfc69fc8968 SHA-256: 8d90c29379c1ba4b87f684db6eacac1de57c2b393223477c24999cbfb0e4b4a2
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://gettraff.ru/strik?utm_term=dale+vida+a+tu+cerebro+opiniones In PDF document text
    • https://zakulupibuwuvos.weebly.com/uploads/1/3/4/6/134686441/6369dbfe2.pdfIn PDF document text
    • https://bokakarepexopo.weebly.com/uploads/1/3/4/7/134750167/345a6db2fc89.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489732/normal_5fe22289aa1c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381098/normal_5fa21814c7d86.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/xetasif/antigone_jean_anouilh_livre.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/60111586824.pdfIn PDF document text
    • https://s3.amazonaws.com/vanatul/best_reader_for_ipad_air.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/rotadarelusevokijaselig.pdfIn PDF document text
    • https://s3.amazonaws.com/lolijexejomak/bose_nc_700_hp_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/meteoradar_evropa_android.pdfIn PDF document text
    • https://s3.amazonaws.com/zokokamu/bajofujusijusuli.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6592ae9fc3622d5471997/t/5fcee35910aae7757162120c/1607394137773/60829931446.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1e09fbdb33045eec91c30/t/5fd1ba0699fe644e8a5f3a49/1607580174084/86534502188.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_off0000b06b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB06B 5264 bytes
SHA-256: 2f588b0f43d706fc6d1af287c4c1cc440f30f2b00cf35d70a60f922fff22302e
font_01_sfnt_off0000c266.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC266 11052 bytes
SHA-256: 93958983ad3d3b96ea2ee47c5eae3210f0de259a371f11a7dabd30bc9beaf2ee