Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad6806d27c3a3333…

MALICIOUS

PDF

100.4 KB Created: 2021-04-06 17:00:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54a1f91dfcc4042f70720c95d19af6a0 SHA-1: dba9e7d97770bb979d30cb590498b7885f7fe403 SHA-256: ad6806d27c3a333349a365cab99780f6b83a78ce2d4a35efe6414e6cb1699469
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, with a high risk score. It contains an embedded URI pointing to a suspicious domain, which is likely used for phishing or to download a secondary payload. The document body, though heavily obfuscated, suggests a lure related to a game guide, aligning with common social engineering tactics.

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://seumenha.ru/wix?keyword=dragon+warrior+monsters+2+cobi%2527s+journey+monster+breeding+guide
    • https://cdn-cms.f-static.net/uploads/4483349/normal_6064d842cccec.pdf
    • https://cdn-cms.f-static.net/uploads/4412582/normal_6013714527902.pdf
    • http://sellforce.ru/how_to_address_retired_military_in_writingw4her.pdf
    • http://sesesuruko.mypressonline.com/how_to_apply_adore_semi_permanent_color.pdf
    • http://dressnbuy.com/medieval_2_total_war_change_faction_namescwr8b.pdf
    • http://kyukty68.xyz/rca_universal_remote_code_for_a_sony_tv0vij1.pdf
    • http://urro-hu.com/laxunisugukaduwibutiwider3vm.pdf
    • https://static.s123-cdn-static.com/uploads/4501374/normal_5fc9a32382058.pdf
    • http://dodemul.mygamesonline.org/7042227601.pdf
    • https://cdn-cms.f-static.net/uploads/4465924/normal_6044266c1ffc5.pdf
    • https://cdn-cms.f-static.net/uploads/4493195/normal_6015daf98d6ef.pdf
    • http://kaxiwemusemoj.mypressonline.com/all_maths_formulas_for_class_12.pdf
    • http://lovemecompletely.com/wozajimetozujxnphv.pdf
    • https://cdn-cms.f-static.net/uploads/4487208/normal_601cc48e2b108.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/62c7b811-77ae-4255-8143-e1b23d14bc12/46204244090.pdf
    • http://wivaxodi.onlinewebshop.net/arthropods_classification.pdf
    • http://gegilifopom.myartsonline.com/bmat_test_papers.pdf
    • https://uploads.strikinglycdn.com/files/0e5fe84d-0923-4af6-a891-582e1a063752/the_power_of_one_book.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_off00011b1b.bin
3b05e9e1bfd7d31963812ef176f914c1040b4fd93487af47953b1aa0663ee82b
pdf-font-stream PDF embedded font (sfnt) at offset 0x11B1B 13576 bytes
font_01_sfnt_off0001479c.bin
f7b0f5e9ee91a8fa10ebd0546b70b8b868b6f761336654e6bda67dfaeca7ee6a
pdf-font-stream PDF embedded font (sfnt) at offset 0x1479C 5800 bytes
font_02_sfnt_off00015b6c.bin
d1d6b025b685720f057d784e244be0063e945725e6dca0e4b0bf4e7a433c58fd
pdf-font-stream PDF embedded font (sfnt) at offset 0x15B6C 11924 bytes