Malicious PDF — malware analysis report

Static analysis result for SHA-256 719d2af3782e588c…

MALICIOUS

PDF

81.6 KB Created: 2021-03-30 10:11:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 26dc0e8cd8763c3a079d69cd7dd42dae SHA-1: dc9d343ac80c3660e6f8296dd98830bc3d9d2714 SHA-256: 719d2af3782e588c6216892d8d9a9c3ec9ef62fb4c36cb9e19d7c5bd0b433e5e
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains keywords related to auditing, suggesting a lure to trick users into downloading a malicious payload.

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://resalured.ru/award?keyword=plan+de+auditoria+definicion+pdf
    • http://adanakebap.org/86870507126ws9x4.pdf
    • http://vexizudu.medianewsonline.com/antenna_design_basics.pdf
    • https://cdn-cms.f-static.net/uploads/4391308/normal_603e376e4e407.pdf
    • https://static.s123-cdn-static.com/uploads/4483104/normal_5fefb86b62aad.pdf
    • http://draiwenstore.online/wix_oil_filter_for_2007_honda_civic14528.pdf
    • http://winwites.space/bright_dot_in_skyxwinq.pdf
    • http://itactical.xyz/2005781026dphir.pdf
    • https://cdn-cms.f-static.net/uploads/4496381/normal_6047029c36d52.pdf
    • https://cdn-cms.f-static.net/uploads/4417645/normal_605a917f9459a.pdf
    • https://cdn-cms.f-static.net/uploads/4366639/normal_5fd0e677a50d1.pdf
    • https://static.s123-cdn-static.com/uploads/4495402/normal_5fc5d979345c0.pdf
    • https://cdn-cms.f-static.net/uploads/4490123/normal_603fc4536b504.pdf
    • http://naturalik.fun/amityville_horror_movie_free_hd7vylu.pdf
    • http://fb-copyright-help-from.com/calculus_related_rates_problems_and_solutionsto4xw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tosevud/pubaxo.pdf
    • http://donufuruwitij.atwebpages.com/radopazaligimadur.pdf
    • https://s3.amazonaws.com/nisiwanolom/a_different_mirror_audiobook_free.pdf
    • https://s3.amazonaws.com/tevigotu/gakebuxapomubituxopot.pdf
    • https://s3.amazonaws.com/fulosobezur/2013_dodge_charger_srt8_manual_transmission.pdf
    • https://s3.amazonaws.com/vezumobigodub/significado_de_languidecer_sinonimo.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea58.bin
ffc0d917e80f2d22a44b78c8effe41377ad7e243d89617ac65afdb29e679b1b3
pdf-font-stream PDF embedded font (sfnt) at offset 0xEA58 4972 bytes
font_01_sfnt_off0000fb56.bin
95f542da22b45e20c4a5a9cf676eb186a62d0caa9cf71e477bb20a883a812f61
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB56 11532 bytes
font_02_sfnt_off00012160.bin
bf8f9ece8d9d74ce2d7a98a07ee1bb8f4056faf702b3b1702118181e85f1b939
pdf-font-stream PDF embedded font (sfnt) at offset 0x12160 16312 bytes