Malicious PDF — malware analysis report

Static analysis result for SHA-256 2474cdb4fb8a3d68…

MALICIOUS

PDF

87.1 KB Created: 2021-03-30 19:42:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48663c02daa607d3e1d61ef7b2fbbf81 SHA-1: 167cb2c094ddf6c472aacea6462a90f561f08cbe SHA-256: 2474cdb4fb8a3d6813cd8937453563cd870d51d780a511877d3cd8440ccbd763
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The PDF contains a large number of external links, many of which are SEO-themed, suggesting a link farm designed to drive traffic to potentially malicious sites. One prominent URL, 'https://lozipotod.ru/wix?keyword=naruto+apk+mod+games', indicates a lure related to popular game mods, a common tactic for distributing malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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=naruto+apk+mod+games
    • http://ig-mediateam.net/what_is_the_best_air_fryer_recipemlmfy.pdf
    • http://salea.site/the_secret_law_of_attraction_movie_summary6cdyx.pdf
    • http://probnik1313.tech/open_syllable_worksheets_2nd_gradenz1vf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kovozenamofox/cisco_packet_tracer_free_6._0.pdf
    • https://6998e30b-c911-4113-ab34-4c15204891c7.filesusr.com/ugd/429b25_2c234a02747f4cfcad4b7829b04cf087.pdf?index=true
    • https://s3.amazonaws.com/tenunud/7569112369.pdf
    • https://s3.amazonaws.com/gonima/computational_physics_with_python_mark_newman.pdf
    • https://s3.amazonaws.com/votubukaxogilix/13666026050.pdf
    • https://s3.amazonaws.com/sesafefanulokam/pazavogibo.pdf
    • https://s3.amazonaws.com/sogovekevi/audiophile_optimizer_manual.pdf
    • https://s3.amazonaws.com/rimepusox/jikitakilozikepew.pdf
    • https://s3.amazonaws.com/lunojol/property_damage_report_form_template.pdf
    • https://569e8712-2873-4b93-a654-ea71b6b809e3.filesusr.com/ugd/345929_82c2815eb10b4d659792201b368486b7.pdf?index=true
    • https://11f44e1d-c86f-4be6-baa1-90970e7c24f5.filesusr.com/ugd/a298ce_43d41aca627b438fa468a80a0e52c7cf.pdf?index=true
    • https://3ea853e4-7f2b-4fb0-9229-b04907a1e321.filesusr.com/ugd/d94095_56e031f7b01a4b3088a096a0b141ec18.pdf?index=true
    • https://s3.amazonaws.com/nufidibodudulad/gone_with_the_wind_2_full_movie.pdf
    • https://804b95bc-9ca4-448d-a094-5a8e1ff69a26.filesusr.com/ugd/99d1da_5f8037229301454ba55260fff411943a.pdf?index=true
    • https://7fc1e5b2-1dd8-4457-9de2-3dea1ab9f589.filesusr.com/ugd/fedd61_a8cc8444db9246a3a37edd3b6d1baf07.pdf?index=true
    • https://s3.amazonaws.com/minaxigevani/allavsoft_full_version_free.pdf
    • https://s3.amazonaws.com/fukepez/epson_xp_6000_printer_cartridges.pdf
    • https://s3.amazonaws.com/bitajemisajoz/watubi.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_off0001184f.bin
0ac781598933cf4a92a0463e605ed2a7a122fcf7c8799b0978073b7e8519c51a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1184F 5280 bytes
font_01_sfnt_off00012a3c.bin
39a15680868befabf444df8eba39ea0a3695b3490b0f4c643dd9e66fd7bcfa10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12A3C 10908 bytes

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