Malicious PDF — malware analysis report

Static analysis result for SHA-256 78155509db5724cb…

MALICIOUS

PDF

84.5 KB Created: 2021-03-26 05:00:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70e3db9bcf22c7999607b517979b166e SHA-1: dc266a3fb622f72aa8a82ff138140700085ce369 SHA-256: 78155509db5724cb295a714cdde42db71dd70f50ce44be6b2f690241af10d745
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URL suggest an attempt to redirect the user to a malicious site, potentially for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://xezojetit.ru/wix?keyword=xmodgames+clash+of+clans+2019
    • https://cdn.sqhk.co/pilozarager/1Ejb4gf/nagarawudazesurunigoxad.pdf
    • https://cdn-cms.f-static.net/uploads/4426543/normal_603a962628dab.pdf
    • https://cdn.sqhk.co/gewanunu/1xBjfgf/43842218690.pdf
    • https://cdn.sqhk.co/zapajugadira/tajicjc/woniboba.pdf
    • https://cdn-cms.f-static.net/uploads/4401694/normal_603e16bb6e8cf.pdf
    • https://static.s123-cdn-static.com/uploads/4374371/normal_5ff3b9640f4eb.pdf
    • https://cdn.sqhk.co/bepoweruga/ef2jbPW/wooden_spoon_craft_projects.pdf
    • https://cdn.sqhk.co/zixajofazadi/Sidxsgg/buxowirimozugad.pdf
    • http://lunepemebixapal.22web.org/dosejapevek.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/761c26fa-2bb1-4b1c-9f2f-ef4b220cb9c8/13980865266.pdf
    • https://uploads.strikinglycdn.com/files/ae7999cb-89a7-42a4-87b7-07598054d7b6/radio_pioneer_deh_1300mp.pdf
    • http://tudafaketewud.rf.gd/autocad_2020_to_dwg_converter.pdf
    • https://uploads.strikinglycdn.com/files/f51265bc-083d-42cd-bca3-8911ec4e7f99/what_kind_of_oil_does_2015_chevy_malibu_take.pdf
    • https://uploads.strikinglycdn.com/files/b7750f9e-c288-4cf2-b095-76ca63dbd075/54617956969.pdf
    • https://uploads.strikinglycdn.com/files/1a39b3a0-bb9f-4379-8a5e-261382734ca1/xaravolewarakebex.pdf
    • https://uploads.strikinglycdn.com/files/8db0530c-3ffd-46e0-b2e9-a13f1b151146/ridotuno.pdf
    • https://uploads.strikinglycdn.com/files/3e755297-bf8f-4d66-bc2d-911655eefe5b/maytag_top_load_washer_error_codes_ld.pdf
    • http://rujidita.rf.gd/86254889572.pdf
    • https://uploads.strikinglycdn.com/files/473319a6-6b18-48f8-b759-5478d7ac6af0/mars_and_venus_on_a_date_chapters.pdf
    • http://fomobiwudaz.rf.gd/60729214223.pdf
    • https://uploads.strikinglycdn.com/files/db5889c0-573e-4a60-b302-933901384b4b/75732859363.pdf
    • http://zukixewagiv.epizy.com/latest_nora_roberts_books_2020.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f438.bin
27fbeabafc1735c98aede7ac7b7e5da8aa15885c3d6dd6c8879b5dc26356d26a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF438 5796 bytes
font_01_sfnt_off000107d1.bin
e8203fe96f845a9e5152987b787f88a301ad48d111dbc196ae2762c495a58a7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107D1 11832 bytes
font_02_sfnt_off00012e7f.bin
31aa257675234f953cb39254c73a0c002637764ec2691c470e0912636c3685cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E7F 16204 bytes

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