Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5cf8bcdcceaa23e…

MALICIOUS

PDF

59.2 KB Created: 2020-12-19 11:41:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 429fab8213aecbb8ddc840515fb5b824 SHA-1: bbb20fb6dca2841f5ef7882b6b8158557371ec58 SHA-256: f5cf8bcdcceaa23e99554b68734a38b54675ac46c76ec775ef0b2f76038dbadb
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that points to a suspicious domain, traffking.ru. ClamAV detected this file as Pdf.Phishing.Trojan, and an ML classifier also flagged it as malicious. The presence of an external URI and the high risk score suggest this PDF is designed to redirect users to a malicious site, likely for phishing or to download further malicious content.

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/123?utm_term=jump+manual+reddit PDF link annotation
    • https://xokafewapi.weebly.com/uploads/1/3/4/4/134488510/deposali_pakajulab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365589/normal_5f8cbdbb1cc14.pdfIn PDF document text
    • https://zowimebewira.weebly.com/uploads/1/3/1/6/131606727/94fa6bd3481bb.pdfIn PDF document text
    • https://tetomorefaboma.weebly.com/uploads/1/3/1/3/131384600/lexanenexinipeveloka.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368735/normal_5fc180368b665.pdfIn PDF document text
    • https://pafoxewov.weebly.com/uploads/1/3/4/4/134470920/7305260.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f51f6672-f5f4-44e6-b39a-06d24e2da830/27158071823.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2def6854-0b15-44bf-b4b7-ad56893e0b06/mp3_indir_dur_ilahi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5b523485235c86bdbba6/1606376275716/genurodurijor.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc505c01c8c7413144c6c55/t/5fcedd8a69d6d06d5530be95/1607392652420/2._2_9.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f9a8b2c-ffee-4a75-83aa-cfb3fac9af1e/rusiwinejologarolejo.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_off0000af03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF03 4916 bytes
SHA-256: 53c9012462646f8371a73062f14c58e98d7455a577c73e019d247e6319798b90
font_01_sfnt_off0000bfa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFA0 9668 bytes
SHA-256: c840abdc4d8803912064fbe88ea6fe7409580f5f790068cc6b74fc4dd76ea69d