Malicious PDF — malware analysis report

Static analysis result for SHA-256 eab794f58e56bf4c…

MALICIOUS

PDF

74.9 KB Created: 2021-05-08 05:57:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4c2c3a30e30ec2617baa55071323882 SHA-1: bcb4c0d3087318429809f516dee5ce8e7cdf4200 SHA-256: eab794f58e56bf4c551209a9f50fee9028a799e10b172c443cc3c6d0efdd379b
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or phishing content. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though obfuscated, appears to be a lure related to appliance maintenance, aiming to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/strik?utm_term=how+to+add+water+to+rca+ice+maker
    • http://lojapidabud.mypressonline.com/petty_cash_balance_confirmation_letter_format.pdf
    • http://sezejawi.mypressonline.com/general_classification_of_antibiotics.pdf
    • http://nigavereke.mygamesonline.org/pathfinder_player_companion.pdf
    • http://vuvopogawuxaxax.22web.org/97133941662.pdf
    • http://nigemutekilum.mypressonline.com/keselowepibejipademosu.pdf
    • http://gatokin.iblogger.org/26713387752.pdf
    • http://matimomewojime.mypressonline.com/general_ability_selective_test.pdf
    • https://cdn-cms.f-static.net/uploads/4476436/normal_6045f611c5e47.pdf
    • https://cdn-cms.f-static.net/uploads/4404297/normal_6058526b7b441.pdf
    • https://cdn-cms.f-static.net/uploads/4465125/normal_6041b8abcf44f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://farudigenudoze.onlinewebshop.net/84185054463.pdf
    • https://uploads.strikinglycdn.com/files/443c515e-efc1-45ad-9309-61518c304932/60309445306.pdf
    • https://uploads.strikinglycdn.com/files/6e6cf3e2-a430-44a0-99c5-571818027c21/vopumasigikowesulaped.pdf
    • http://lofunadex.myartsonline.com/90536880236.pdf
    • https://uploads.strikinglycdn.com/files/28a806d3-4205-45a8-b594-7857b0f3622d/tofofipisevod.pdf
    • http://pasofotamuteper.atwebpages.com/64250958866.pdf
    • https://uploads.strikinglycdn.com/files/1fa1e6be-e778-4059-9128-bca6fe251a75/black_and_decker_edger_le760.pdf
    • https://uploads.strikinglycdn.com/files/7cc0009b-bb04-47de-9d4f-c416980380f6/sink_drain_parts_diagram.pdf
    • https://uploads.strikinglycdn.com/files/daa0a405-2b44-4a08-bec9-d9efeb9abd67/zenepo.pdf
    • https://uploads.strikinglycdn.com/files/bb62aa00-3c5f-4594-8985-f2b8f959f355/95957581190.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_off0000e764.bin
e664fb211ebdec215395f33bf553076a53e0388aeea783552c1c04d141e9f6ea
pdf-font-stream PDF embedded font (sfnt) at offset 0xE764 4992 bytes
font_01_sfnt_off0000f858.bin
54cb16853da9e93fd46d34f9709b23fe2e33ce653bd905e80591ad65bda13b48
pdf-font-stream PDF embedded font (sfnt) at offset 0xF858 11316 bytes