Malicious PDF — malware analysis report

Static analysis result for SHA-256 08a7a0ca084c8331…

MALICIOUS

PDF

70.4 KB Created: 2020-11-14 08:47:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 799cb0b798ea7c3f581b544bf0b4ea0d SHA-1: b8232484a129823e1ed48c674f601a3a5ea20590 SHA-256: 08a7a0ca084c8331a7ad1a533032a9e5aa1099638a852b8460822ee67058679c
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to 'production function' which is likely a pretext for malicious activity.

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://traffnew.ru/strik?utm_term=how+to+find+mrts+from+production+function PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4401546/normal_5f9a8dc6d04ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415768/normal_5fab6dda81e4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366964/normal_5f93f2c85e37d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393779/normal_5f927c9bb91ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387040/normal_5f9d98ffbd006.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374840/normal_5f9072d11dd2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424330/normal_5fa33c57bd3c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403563/normal_5f9f4295dd364.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384832/normal_5f8e15bedad9f.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/61af61af-ddc3-4c6f-a1db-369cb2d620ce/pugebuzojazovagokesupon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77678be7-9caf-445b-aaf5-35bcc77dd3a5/zesuxorodusupon.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_off0000d71d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD71D 5112 bytes
SHA-256: 0281d60d5f364d405bda4bf74c144f5be52ccd461725021361d64dbdf2b21260
font_01_sfnt_off0000e885.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE885 11088 bytes
SHA-256: 6d9672c373adb08e7014783e78b40976668753869c4703ac35f90bddc14f4542