Malicious PDF — malware analysis report

Static analysis result for SHA-256 93119233546fe580…

MALICIOUS

PDF

74.9 KB Created: 2021-04-02 23:51:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e565456feca1d2e0b5c304edd0a33df4 SHA-1: 79a40b02ce4a2aeef3d84db6e02787b27ccf6a65 SHA-256: 93119233546fe580cb3033c3b42343826c24f2e1d8a4f1a1a6f4ed6684579870
96 Risk Score

Malware Insights

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

The file is a PDF containing multiple embedded URLs, one of which is directly referenced by a heuristic as an external URI. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of embedded URLs suggests an attempt to redirect the user to malicious sites, potentially for credential harvesting or further payload delivery.

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://xezojetit.ru/strik?utm_term=how+to+cook+rice+in+aroma+professional
    • https://cdn.sqhk.co/zimuteraf/iijbWhf/foolproof_module_2_answers_quizlet.pdf
    • http://daravto18.ru/race_for_the_galaxy_strategy_guidevs0gh.pdf
    • https://fewaxozane.weebly.com/uploads/1/3/4/3/134341296/f7103680cc3b1e.pdf
    • https://cdn-cms.f-static.net/uploads/4478137/normal_5fe635afa47c9.pdf
    • https://nanuvofekoredam.weebly.com/uploads/1/3/5/3/135385966/siwobuwajeji-zagopi-zutotobafi.pdf
    • https://cdn.sqhk.co/vekuperik/9hcLQvI/2260042910.pdf
    • https://cdn-cms.f-static.net/uploads/4366959/normal_60668af7599f0.pdf
    • https://static.s123-cdn-static.com/uploads/4392861/normal_5fef42b3d8289.pdf
    • http://hot-money.fun/vodadalhf9cv.pdf
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdf
    • http://cocobuka3.xyz/hp_photosmart_plus_b210_manual44vgx.pdf
    • https://womomoko.weebly.com/uploads/1/3/4/8/134848640/nolaxidus-kanulisi.pdf
    • https://static.s123-cdn-static.com/uploads/4468814/normal_5ff654488d309.pdf
    • http://shoop-fe.ru/515832461227jp43.pdf
    • https://cdn.sqhk.co/vilubofi/hygdrtK/12985856618.pdf
    • https://cdn.sqhk.co/duwenaxiseve/TiaijIm/39806321101.pdf
    • https://cdn.sqhk.co/xafukapewe/hdzgdXd/saudade_definition_pronunciation.pdf
    • https://cdn-cms.f-static.net/uploads/4390081/normal_6023c8ae90fdc.pdf
    • https://cdn-cms.f-static.net/uploads/4446045/normal_600c64a4416e1.pdf
    • https://static.s123-cdn-static.com/uploads/4450501/normal_5ff697ce2a0be.pdf
    • https://cdn-cms.f-static.net/uploads/4369788/normal_6037f04e89f1a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off0000e808.bin
0918136d56e95ea90079631295eb4dadd2219d444c375a3b011686cab4ee77d0
pdf-font-stream PDF embedded font (sfnt) at offset 0xE808 5280 bytes
font_01_sfnt_off0000f9f9.bin
b25f7ae5198852c7ce1ac2f9a6ef3d3683402978fcaac9b7e8c77332e04004d2
pdf-font-stream PDF embedded font (sfnt) at offset 0xF9F9 10700 bytes