Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7e0487c444bbb2f…

MALICIOUS

PDF

88.3 KB Created: 2021-03-17 12:57:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 24544b55bcedf55f59817c9798db6591 SHA-1: 9636e1ff2505c134878dd612b2adaea69d3d2199 SHA-256: e7e0487c444bbb2f31d9ca00459f287c499d1d5f09256acefc00d55dccbfacc5
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious. It contains an embedded URI pointing to a suspicious domain, likely intended for phishing or malware distribution. The document body, though heavily obfuscated, suggests an attempt to disguise the malicious intent.

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://leonvi.ru/wix?keyword=spanish+baseball+players
    • http://nelilovodik.scienceontheweb.net/anamnesis_alimentaria.pdf
    • http://kilijosizujowo.medianewsonline.com/chemistry_atoms_focused_approach_3rd_edition.pdf
    • http://xijonofupawulo.mypressonline.com/mefivafexoluli.pdf
    • http://giwitap.getenjoyment.net/cavendish_university_courses.pdf
    • https://static.s123-cdn-static.com/uploads/4447434/normal_5ff8aa88f0a82.pdf
    • https://cdn-cms.f-static.net/uploads/4500910/normal_602a91b587b04.pdf
    • https://cdn-cms.f-static.net/uploads/4369654/normal_60115491852e4.pdf
    • https://static.s123-cdn-static.com/uploads/4380213/normal_60031d2feaeee.pdf
    • http://krokoboko3.xyz/troy_bilt_generator_manualpjsb1.pdf
    • https://cdn-cms.f-static.net/uploads/4495531/normal_602704356dcd2.pdf
    • https://static.s123-cdn-static.com/uploads/4527357/normal_5fef5f62653ea.pdf
    • http://creditactive.info/tawapt6xi7.pdf
    • https://cdn-cms.f-static.net/uploads/4495550/normal_5fe9c6757b1d8.pdf
    • https://static.s123-cdn-static.com/uploads/4380237/normal_5fde9f3ccbfdb.pdf
    • https://static.s123-cdn-static.com/uploads/4446170/normal_5fe15ce229a3b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/7af53111-f29d-4e21-81c6-98cb5d3737aa/basic_dutch_grammar_book.pdf
    • http://nimanexobubibub.onlinewebshop.net/aines_dosis_y_presentacion.pdf
    • http://geforagegi.atwebpages.com/sandisk_wireless_flash_drive_software.pdf
    • https://uploads.strikinglycdn.com/files/2c6487a9-33fc-431d-948e-c02124439d8d/what_does_facilitator_mean_in_2k.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_off00011b1f.bin
97ca49232d90cb81193c7f753f11f15b39979930f70bfed92d6b148f6a0f9dc4
pdf-font-stream PDF embedded font (sfnt) at offset 0x11B1F 5252 bytes
font_01_sfnt_off00012cf5.bin
f6574af0a0385e6dabf115190614607e21cb9705ae983f961516547f63e3d549
pdf-font-stream PDF embedded font (sfnt) at offset 0x12CF5 11368 bytes