Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9c7330fd15e12b4…

MALICIOUS

PDF

89.3 KB Created: 2020-12-14 22:53:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 398c535d462dc07e59032ad699940cec SHA-1: bc9adf8939c38ac32b6c443a0f220fda237e5983 SHA-256: e9c7330fd15e12b4b70707078f3f47ced6d6fc6130e9b4acdc17e7bb84c0a1a3
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for malicious purposes. The document body, though heavily obfuscated, suggests a lure related to a 'manual', aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffe.ru/strik?utm_term=klein+vdv+scout+pro+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4448535/normal_5fbd76f97f3ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415937/normal_5fa1c03093df8.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/livivuvuwugeb/tales_of_maj_eyal_paradox_mage_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/41051546540.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/30041982539.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e07691d-2915-45e9-87b8-280ab159df1f/chamberlain_whisper_drive.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/231743e4-c12a-4f55-8bb6-60ca0001dfc2/figivetibapolix.pdfIn PDF document text
    • https://s3.amazonaws.com/rimejiguvif/70230400488.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/nitabegadidiwapuw.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_off00011c24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C24 5248 bytes
SHA-256: 6fc71c112531a22dcae0c9bdd841adc48ca131d4f59e777f72762e8cc3271d3a
font_01_sfnt_off00012dee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DEE 12172 bytes
SHA-256: 935486be15df4066067f5b978900760c0e0b4e8b9376c9071887e242f936dd24

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