Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a4746ad0c5c2461…

MALICIOUS

PDF

82.0 KB Created: 2020-11-16 16:39:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: cdeea98f30c4bb8a45c4b1c71a540452 SHA-1: 96075026f67c581e764163c3a9e3e99f896854f5 SHA-256: 0a4746ad0c5c2461022cc93d28df037f0b24f58cd67b7272d7bae43377213ac7
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URL that, when visited, likely leads to a phishing or malware distribution site. The document body, though heavily obfuscated, appears to be related to 'money laundering offences sentencing guidelines', suggesting a pretext for the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafficel.ru/aws?utm_term=money+laundering+offences+sentencing+guidelines PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369653/normal_5fac19d56f17a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368772/normal_5fad4ca719e40.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/tetazino/80817386681.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4e35d2d-9544-4845-9771-2e3058061225/bexene.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/40612567650.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/4532984367.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae80cea7-1b79-4512-aeec-64a09e2c6622/gajeviriropulutamisomin.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/14311326917.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/zetejitutufidosamafo.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/archeage_shadowblade_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/074bb3e5-bde5-4d72-8762-a4d226df6dba/gamodusakomofunimezoviz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d54d4c1f-8c9d-4853-8e30-44ffd0e92436/gosenolopezabotipelak.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/birth_announcement_cards_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22e60f15-cff1-43f4-898a-50eeeb1d046a/renal_pyramid_ultrasound.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_off000103d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103D7 5296 bytes
SHA-256: 6bcfb43d2ff95de2b72552a7b0f41449586433c5ecae22f2f6a0a938e6254bc8
font_01_sfnt_off00011605.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11605 10828 bytes
SHA-256: de6338f399faf9a8dd3a273a1249467562ed0705dd8c0f3765192750ffcc323e