Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ee5b96934f527d3…

MALICIOUS

PDF

83.3 KB Created: 2021-03-23 21:16:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: cb368eacf51b46084f067746198443d2 SHA-1: b13dd877022e0a6c611c3e30cc492d2c09de3409 SHA-256: 7ee5b96934f527d3df294f4f1fe816d144b33eb1e88a6ea7eaf526b1caad7871
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, many pointing to disposable domains and potentially malicious content, as indicated by the 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'ML_NYX_PDF_MALICIOUS' heuristics. The ClamAV detection further confirms its malicious nature. The primary attack vector appears to be directing users to external URLs, likely for phishing or to download further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://mezovuduw.ru/wix?keyword=scag+mower+repair+manual PDF link annotation
    • https://cdn.sqhk.co/kekagate/co6bgjO/rescue_me_puzzle_game_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385636/normal_5fd0925b5d4f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380229/normal_5fda0b2443f5c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376354/normal_60063de820b2d.pdfIn PDF document text
    • http://xovijezup.mywebcommunity.org/55391789009.pdfIn PDF document text
    • https://cdn.sqhk.co/sozaxejiv/hhaxhbn/pathogenicity_islands_in_bacterial_pathogenesis.pdfIn PDF document text
    • http://dalidusiz.mywebcommunity.org/blended_learning_book.pdfIn PDF document text
    • http://lutirojibafap.sportsontheweb.net/firetexiwifejovaripuzi.pdfIn PDF document text
    • https://cdn.sqhk.co/lizasizova/hg8hbtW/kaiser_permanente_washington_state_locations.pdfIn PDF document text
    • https://cdn.sqhk.co/muvetowiripa/UdcYdJD/armello_game_pass.pdfIn PDF document text
    • http://kiparegazeratax.getenjoyment.net/harbor_breeze_ceiling_fan_wiring_harness.pdfIn PDF document text
    • https://cdn.sqhk.co/fipimomozuk/0jgiAgj/dopeboxisirubupugovekoxot.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445129/normal_5fe98fb5ab24e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387052/normal_5ff690ff40517.pdfIn PDF document text
    • https://cdn.sqhk.co/xeposetuge/Yejvady/candy_cane_run_5k.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://gizefevogu.rf.gd/important_days_for_bank_exams.pdfIn PDF document text
    • http://fakesux.epizy.com/screen_capture_video_android.pdfIn PDF document text
    • http://wugujub.onlinewebshop.net/21539737291.pdfIn PDF document text
    • http://vigukesege.epizy.com/wholesale_aluminum_diamond_plate_sheets.pdfIn PDF document text
    • http://nijopupeboxisa.epizy.com/carmageddon_reincarnation_save_game.pdfIn PDF document text
    • http://widepidaba.atwebpages.com/digital_electronics_textbook_free_download.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD2D 5072 bytes
SHA-256: a45e23223ec70ed17c3bc8eac13361de2d9e475ea2ac60b8ec4d11af26425263
font_01_sfnt_off00010e51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E51 10460 bytes
SHA-256: 2c58b79c251697cef28d1796bf752d52fda3f1ad0af770ecfdf76f30f7d0179a
font_02_sfnt_off00013220.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13220 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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