Malicious PDF — malware analysis report

Static analysis result for SHA-256 97b79dc443e2e515…

MALICIOUS

PDF

69.7 KB Created: 2020-12-19 16:29:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 71fc846629e20ea5571f6ed4898036c4 SHA-1: 19b5f3f74fef9e76d52add935ae1798b19cfbc88 SHA-256: 97b79dc443e2e515560f25ed11cf8f683e2c7a3b747058c8c19f1ec416433b85
104 Risk Score
Tags
free-cdn-ebook-manual-lure

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 presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffine.ru/123?utm_term=elmo%2527s+world+families PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4376096/normal_5fb718e594ae5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406456/normal_5fa4baee2fa96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408853/normal_5f9da3af6243f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408718/normal_5f967babc3c9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471114/normal_5fb62b05b434a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485149/normal_5fdd863886249.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490266/normal_5fcb9e79d2eaf.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/fotepopunaj/wow_legion_endgame_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc66380bdb33045eee79f69/t/5fd6c8b8164d0f203c8b672f/1607911609207/759973520.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4dac4ec917750a3f10bd2/t/5fcb9c538dcc5603bef77685/1607179350842/sekuzorazag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8686723-4b0b-48dc-8323-ead85a59e184/panzoid_modelos_intro.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7b7e881fec0096843ffa9/t/5fd041f1cb6bfe602c4a845c/1607483890826/58027929140.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce671790dbcc71e79e8397/t/5fd0617c6cbf29106bfb164e/1607491968360/xerata.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4d6ee6d49a06bb883dd6/1606372720714/26016183589.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_off0000d338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD338 5136 bytes
SHA-256: c7c4e233703a12f999d48c0475084d6f7ee43469626d7d8c56d62315da577b90
font_01_sfnt_off0000e4b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B1 11068 bytes
SHA-256: 436277dbf25192fe3e57737428a44f3708249542cda63cd32769bf3c66dc1229

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