Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a2b2d96f3b8e112…

MALICIOUS

PDF

60.7 KB Created: 2020-11-18 17:55:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: b06a5f1d91ac645e26d0659762a9a874 SHA-1: 732666339ee15943fa467831fc2d99ec7899d195 SHA-256: 0a2b2d96f3b8e112b55053623348b842d58f66f5a637b8b5c0f317faf229056c
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a suspicious domain, likely intended for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to redirect the user to a malicious site, possibly exploiting PDF vulnerabilities.

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=characteristics+of+living+things+worksheet+answer+key PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366007/normal_5fb3310734c8a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404739/normal_5f9e94e05b2fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393763/normal_5f8eb429555c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385010/normal_5f90ab2fc75d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403407/normal_5fb2f7e1659af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380229/normal_5f8dfe5b5c572.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402267/normal_5f9ffb3f74ba9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450247/normal_5fa3c56c420dc.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/wuniku/sugiwokigigolode.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/127809dc-d8f0-43af-9fde-dd1893aa83f2/bavomutezudimijomugosu.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/98151489871.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/17535556284.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_off0000b199.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB199 5364 bytes
SHA-256: b2a28691844db4d8104e89c5dfb0c97756739c6ce4f0410c0d414ef9770a4bbb
font_01_sfnt_off0000c3ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3EE 10216 bytes
SHA-256: 5bfde3e1489d05a0a55e67df34390a7af0823ce26c6a7575fa9e61d7195d5b7b