Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4ed3e86de678676…

MALICIOUS

PDF

75.8 KB Created: 2021-03-23 09:56:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 26db2c22f3d58e6c448555c20f7d8d9f SHA-1: 5236f981bdf9b0f492b10c6755de97cc6ac34157 SHA-256: c4ed3e86de678676b1a00f973d610e31deecf8d015ac952daab62b7da95c6553
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URL pointing to a domain that appears to be part of a phishing or malware distribution scheme, disguised as a repair manual. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into downloading further malicious content.

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://lozipotod.ru/wix?keyword=2007+toyota+avalon+repair+manual+pdf
    • http://bitcoinlearningcentre.online/photoshop_photo_editing_tutorial_in_hindi8hex1.pdf
    • https://nolopatemima.weebly.com/uploads/1/3/4/5/134583633/dutoxatawopa-fozodol-lodijum-paxadojeliro.pdf
    • http://nudistoff.club/352151281832wa2b.pdf
    • http://lightsex.ru/what_is_a_waking_dream_wish_fulfillmentrhwrb.pdf
    • https://cdn.sqhk.co/videgogaf/hdgcqiP/94765953201.pdf
    • https://powirubojeti.weebly.com/uploads/1/3/1/4/131482959/5587756.pdf
    • http://sukujugonada.22web.org/44234110882.pdf
    • http://1xbets-reg.site/how_to_tighten_bobbin_tension_janome5cn4f.pdf
    • https://cdn.sqhk.co/kotoweraga/bhjFhjd/line_driver_ic.pdf
    • https://wiwokuvivatazu.weebly.com/uploads/1/3/4/6/134629214/abb8f3acd.pdf
    • http://promooffer.site/98629719123h9pmd.pdf
    • https://ledegukumimajem.weebly.com/uploads/1/3/5/3/135393042/nulewepu.pdf
    • https://cdn.sqhk.co/gidulikegel/Tiggxji/fatiterugukejeruzaloxaja.pdf
    • http://aicberg.net/can_cops_look_at_snapchatsvhczi.pdf
    • http://balifruit.com/john_deere_455_attachmentsy7ldj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dinixebun.epizy.com/9684288871.pdf
    • http://wikidupuzok.epizy.com/kannada_old_songs_audio.pdf
    • https://e8f98835-b194-42a5-b43f-fe2f29920dd6.filesusr.com/ugd/bf650e_3aba480b46b049908daeb4d2fb67b3a0.pdf?index=true
    • http://kemixirutuj.epizy.com/how_to_learn_android_app_development_from_scratch.pdf
    • https://71fc3d66-43b2-4ae0-adc3-dfbcdf8b5360.filesusr.com/ugd/6605a0_4004f5934bfe41f99958f9461c09569a.pdf?index=true
    • 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_off0000ebc7.bin
4f882fb112cd34eec846e209ca97cc0b25b3d356118a5fa0da43e15f6658c70d
pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC7 5428 bytes
font_01_sfnt_off0000fe39.bin
899e74bb802023008a72e0ac952b2f47402283e303d1dbe787ccae1c6973687b
pdf-font-stream PDF embedded font (sfnt) at offset 0xFE39 10500 bytes