Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d3ef2926ab5c94e…

MALICIOUS

PDF

81.2 KB Created: 2021-05-04 01:13:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c47718b2752c9e22a3d40dc61766099 SHA-1: 43c02f86ea0cda0107a0107d74c349c63afee5b9 SHA-256: 2d3ef2926ab5c94e0138af694666679308c5c156d7c959c868af4f26bea3a6d1
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to a 'vegan bulking meal plan pdf'.

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://baarspo.ru/strik?utm_term=vegan+bulking+meal+plan+pdf
    • https://static.s123-cdn-static.com/uploads/4463788/normal_6003d274daf98.pdf
    • https://cdn-cms.f-static.net/uploads/4478378/normal_5feaf75d794d8.pdf
    • https://cdn-cms.f-static.net/uploads/4451221/normal_602e98e70aba4.pdf
    • http://static-start.top/relentless_tim_grover_chapters570am.pdf
    • http://evatopshop.xyz/math_tracing_worksheets_for_preschoolers4u73h.pdf
    • http://gukiduwonaxinef.getenjoyment.net/working_of_biomass_power_plant.pdf
    • http://negozio50sconto.info/basketball_game_video6navm.pdf
    • https://cdn-cms.f-static.net/uploads/4479433/normal_601603a251d19.pdf
    • http://lnstagram-help-businesss.com/gabarlo01i.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/26bda6e8-7a4e-4db0-8d51-656c8eb965ac/what_jobs_does_a_mechanical_engineer_do.pdf
    • https://uploads.strikinglycdn.com/files/ec031be1-b617-4bb6-a408-2359f1cddc6f/dead_to_the_world_idiomatic_expression.pdf
    • https://d4996ccb-aecf-47c4-aab6-3c4fe022e1b7.filesusr.com/ugd/b7ed05_a947fd17cd174672b7b87b0b7a250bd1.pdf?index=true
    • https://s3.amazonaws.com/gudukupir/what_does_calling_someone_jelly_bean_mean.pdf
    • https://s3.amazonaws.com/kelukakeb/tupir.pdf
    • https://uploads.strikinglycdn.com/files/6b73e2e7-ed96-4283-b32b-a54366a88764/fishing_knot_tying_book.pdf
    • http://mifojizu.myartsonline.com/55100389426.pdf
    • https://s3.amazonaws.com/gekojulog/fedex_store_near_me.pdf
    • https://uploads.strikinglycdn.com/files/23a02601-4509-4189-b131-08a76e07206d/ruxebimu.pdf
    • https://ea7788ad-ef5a-48b5-911d-3ad522045378.filesusr.com/ugd/f3bfbb_c25e35cfd4124467a9cccefe729f56f3.pdf?index=true
    • http://pofijiserige.onlinewebshop.net/17913007996.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_off0000ff94.bin
69af418b33d80de3cffe5387230620454adec2233f51173f881305c6fb206d1f
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF94 5256 bytes
font_01_sfnt_off00011172.bin
c4b16e3b149fc73cff32e51cd2faab1d353185a19608f2e23f0b8bd03d2fee32
pdf-font-stream PDF embedded font (sfnt) at offset 0x11172 10792 bytes