Malicious PDF — malware analysis report

Static analysis result for SHA-256 c18351b2708b150d…

MALICIOUS

PDF

74.8 KB Created: 2021-02-12 23:51:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 42fcc6c46462cfa1e265577ea23c0ead SHA-1: d42e805a277a103f76a4ddb12d5930c6611910f3 SHA-256: c18351b2708b150d9b1fcfc5f1f37c7c0e7aaf0362133ab30f806bfd4ad04676
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 identified as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to printer manuals, a common tactic for phishing.

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://bologen.ru/wix?keyword=canon+mx472+manual+print+head+alignment PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4495065/normal_5ff7767cc8eab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412908/normal_600dabdb73ad2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365657/normal_5febdc40c7de1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379971/normal_5ff098fd1298b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405674/normal_5ff4c0f5927a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421218/normal_5fd19d026699e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://xavisijividefo.epizy.com/97380886676.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/20575661203.pdfIn PDF document text
    • http://gedonisezif.epizy.com/21288830790.pdfIn PDF document text
    • http://futoxivugumerav.epizy.com/bashment_time_riddim.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/certificate_of_origin_form_d_singapore.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/likugamowimu.pdfIn PDF document text
    • http://wixezujixib.epizy.com/46514587035.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/59380322283.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/autocad_civil_3d_2015.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dbc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBC6 5468 bytes
SHA-256: e5442f7951c5307212f03f04969a162977ed7d0870d8218dce60ce44df4a7726
font_01_sfnt_off0000ee47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE47 9956 bytes
SHA-256: 88f55ed6f4acc8f7167f0aae55b2a8547d23395fe9b8e454a8fe1687ebfab14b
font_02_sfnt_off00011063.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11063 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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