Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1331a4beb1694e2…

MALICIOUS

PDF

83.8 KB Created: 2021-03-14 02:39:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: afe43fc3d4c145b9e5b834ee0daec39a SHA-1: 814899c9fbd04200c0828c3889353d71732a1e32 SHA-256: e1331a4beb1694e2533f4e110f81eb2865ff3802a3a460c92486f29942f6a583
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://golowaki.ru/', which is likely part of a phishing or malware distribution scheme. The presence of multiple suspicious URLs further supports this assessment.

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://golowaki.ru/123?utm_term=ahirani+song++sawan+na+mahina+ma
    • https://cdn.sqhk.co/moboguvafuze/njdVzgj/idle_trainer_hack_hackmod._vip.pdf
    • http://telemprom.xyz/329686853377tfuu.pdf
    • https://cdn.sqhk.co/vilubofi/i7whdij/bumosol.pdf
    • https://cdn.sqhk.co/foroboreb/yijidih/3891782609.pdf
    • https://cdn.sqhk.co/tumupowe/jgvoNgf/desunolunaro.pdf
    • http://fojudesekuxujef.22web.org/14535002731.pdf
    • http://legiontry.online/85370902916xl02.pdf
    • https://cdn.sqhk.co/vikaxokaso/jilUhim/duraduzukimiwi.pdf
    • http://zewamiluwevegif.22web.org/76971432976.pdf
    • https://cdn.sqhk.co/geroterunetu/ehdnzgh/fepizaxukomomisofuvexud.pdf
    • https://cdn.sqhk.co/numokafas/iaMKPig/35165866757.pdf
    • http://petersikdar.com/folugakokiwifg1.pdf
    • http://frontglass.xyz/machine_transformation_carton_ondul_ouedkniss1say1.pdf
    • https://cdn.sqhk.co/bimolixumotu/hf5UHih/29708743743.pdf
    • http://baranaydin.org/what_size_windshield_wipers_do_i_need_for_a_2013_ford_focussjcez.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://s3.amazonaws.com/remavuj/analyst_notebook_9.pdf
    • http://nakepusigazu.epizy.com/presente_simple_con_adverbios_de_frecuencia_en_ingles.pdf
    • http://sugexure.rf.gd/pawenun.pdf
    • http://lalukegadugubu.epizy.com/animals_martin_song_pagalworld.pdf
    • https://s3.amazonaws.com/vebisop/romijotiraxasadaposumila.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e96b.bin
5e2d7de24decb6854e0f1ab25f0defc80fbb3698ea50a9ca568793f1fe0fa20e
pdf-font-stream PDF embedded font (sfnt) at offset 0xE96B 5148 bytes
font_01_sfnt_off0000fad0.bin
1fd5ba2d56c2e43680aff0986411f99b2f2dea503bc58ea227e7883f8628173e
pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD0 9876 bytes
font_02_sfnt_off00011c84.bin
86e38fcfb6bb99a3b78845c8429848bb2fe414437cb934b5d76abbfc9027e11f
pdf-font-stream PDF embedded font (sfnt) at offset 0x11C84 10760 bytes