Malicious PDF — malware analysis report

Static analysis result for SHA-256 227dd59c2f1e070e…

MALICIOUS

PDF

79.1 KB Created: 2021-04-03 07:52:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ae6d6acd45e0067b12a0d3fb85b087a SHA-1: e258d260a09699034ed0da9c950f7a3f6150d2e4 SHA-256: 227dd59c2f1e070ed13f2352000e12a3be96254c848ba265a5d97d7feced49ad
96 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating embedded URLs and is flagged by ML classifiers and ClamAV as malicious. The document body, though obfuscated, suggests a lure related to 'minecraft mods'. The primary malicious URL identified is https://botokaw.ru/wix?keyword=best+minecraft+mods+1.5.2, which is likely used for phishing or malware distribution.

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://botokaw.ru/wix?keyword=best+minecraft+mods+1.5.2
    • http://trydouche.xyz/gipenutotonivusabak93ylc.pdf
    • http://copyrights-notices-helps.com/united_states_army_special_forces_trainingejvl1.pdf
    • https://static.s123-cdn-static.com/uploads/4480581/normal_5ff9ecdaaf66a.pdf
    • http://neridofufuleteg.scienceontheweb.net/why_was_the_agricultural_revolution_important_to_history.pdf
    • https://cdn-cms.f-static.net/uploads/4381340/normal_6061cc2875775.pdf
    • http://bumefivaloso.scienceontheweb.net/java_programming_objective_type_questions_and_answers.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/6199e64f-9e03-4eed-9fa0-76039f09a57b/can_you_play_splatoon_without_the_wii_u_gamepad.pdf
    • https://s3.amazonaws.com/xalexojaxipud/dasenuludivafo.pdf
    • https://d4508431-0eee-4913-ac2a-2ec907ed9b18.filesusr.com/ugd/12daa7_22057005786c4105b2c63924d97f2863.pdf?index=true
    • https://uploads.strikinglycdn.com/files/65b80a0d-1a60-4795-bead-1703c2a4dde3/manekefujufubetipo.pdf
    • http://zobuwijezad.onlinewebshop.net/restaurant_reservation_form.pdf
    • https://4dcfe184-cd6c-48f8-9f23-5461c743a1d4.filesusr.com/ugd/cc8533_21b101e43aaf431187fde5b22909dcdd.pdf?index=true
    • https://8137cd1e-393d-4948-8193-eca935452849.filesusr.com/ugd/756799_90a4b9145bad497bab0ac8e0fad85a26.pdf?index=true
    • https://s3.amazonaws.com/nawosineromigi/jarrett_stidham_draft_report.pdf
    • https://uploads.strikinglycdn.com/files/55f875fe-01ff-49a1-877c-de56d12f6c50/fasixedigekajeraxikurelij.pdf
    • https://uploads.strikinglycdn.com/files/08e27e24-5058-4edf-98c1-40c5ac58c772/principles_and_applications_of_electrical_engineering_solutions.pdf
    • https://uploads.strikinglycdn.com/files/1b4eb7e3-dd43-4581-8b2f-bdfa95eca6cb/kohler_jacuzzi_tub_faucet_parts.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_off0000f78a.bin
4c14b9f15bf8ccd836f4989579bdcc80d0e190ce49307210aa14ed921ae04348
pdf-font-stream PDF embedded font (sfnt) at offset 0xF78A 5524 bytes
font_01_sfnt_off00010a4c.bin
7e80b32b9b74ee8422d9e6babd9ce915de04271fef338f96c84f63ee7873f34a
pdf-font-stream PDF embedded font (sfnt) at offset 0x10A4C 10972 bytes