Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c4f360a84ae0d33…

MALICIOUS

PDF

92.7 KB Created: 2020-11-24 10:12:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 156513272646b3b7cb6cae1295b9f577 SHA-1: 99c0ef44294434d6749f429c4f1c8728aaf7a940 SHA-256: 8c4f360a84ae0d3352aae245fc79d60e0ff7a3d65f95f52c15fabcd3cac5b736
96 Risk Score

Malware Insights

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

The PDF contains an external URI pointing to 'trafftec.ru', which is flagged as a potential phishing or malware distribution point. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and the presence of external URLs suggest it's designed to trick users into downloading further malicious content, likely through a social engineering pretext related to 'download iso 27002 pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafftec.ru/strik?utm_term=download+iso+27002+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4453144/normal_5fab7173ec8d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426090/normal_5fa4c5a9a2923.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403121/normal_5fa2cb28b59c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477409/normal_5faedd7c49020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446161/normal_5fa53f287028a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378171/normal_5f908b66c2c62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375531/normal_5f9f8d6c66f43.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/2f6947ee-6047-4768-aae8-17a87bce1df9/fobopimazoduxedopi.pdfIn PDF document text
    • https://s3.amazonaws.com/kufazete/forajarutakejixunukade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd9dd8e2-5e0d-48f3-b694-2f25217e8ae4/69430185722.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/electron_configuration_table_for_all_elements.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/zaponiriror.pdfIn PDF document text
    • https://s3.amazonaws.com/xaliwalufoguni/personification_worksheet_2.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_off000131b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131B5 5384 bytes
SHA-256: fc6d4ca7aaac8504ac1fd77cfeb5fa6e12fa044bce269024ba4320b98a74ad8b
font_01_sfnt_off00014441.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14441 9908 bytes
SHA-256: f13697bdf71f52673d54f4d24508f1fdcb46036f20f9d3913c9cdeaa56f6a481