Malicious PDF — malware analysis report

Static analysis result for SHA-256 5697293afb89b97f…

MALICIOUS

PDF

94.6 KB Created: 2021-03-02 20:35:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ed13f40064b3a403cfea477ef079e415 SHA-1: b8d33a7c2cf3518ba8736f34bab5b43710e9b41e SHA-256: 5697293afb89b97fa83c80ed403d5b1b37afe3a8806910c76ac6282a65c2abb8
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, identifying it as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely intended to trick users into visiting a malicious site. The document body, though heavily obfuscated, references a search query, reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://pelibifir.ru/strik?utm_term=warcraft+2+release+date
    • https://static.s123-cdn-static.com/uploads/4372085/normal_6008381c37d62.pdf
    • https://cdn.sqhk.co/foseziwate/SAjgrgi/masobunibejisivaj.pdf
    • https://static.s123-cdn-static.com/uploads/4496391/normal_5fde49e50f75b.pdf
    • https://cdn-cms.f-static.net/uploads/4417325/normal_6011ec4e42e15.pdf
    • https://static.s123-cdn-static.com/uploads/4501993/normal_5fd08db4a7c2f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zunaporam/fagisetufakajogoj.pdf
    • http://fodimate.rf.gd/what_is_the_theme_of_ode_to_autumn.pdf
    • https://s3.amazonaws.com/fasudikek/anodized_aluminum_sheet_metal_suppliers.pdf
    • http://biwodonugawodil.rf.gd/full_movie_site_for_mobile.pdf
    • http://napajex.epizy.com/10552172161.pdf
    • http://vaguwiraji.rf.gd/android_update_for_galaxy_s6_edge_plus.pdf
    • http://bokakemipik.epizy.com/free_adobe_indesign_report_templates.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013428.bin
51b422aa9902a8a77ed75c3ed7a147d4550690938edd6ae01f827bee1c823718		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13428 5160 bytes
font_01_sfnt_off000145d1.bin
3bc06b35e3aa8646975ef45f3626e3209e0dfbc5ce1640fb24c6aac47089a047		 pdf-font-stream PDF embedded font (sfnt) at offset 0x145D1 11880 bytes

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