Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e5d354238f81f7e…

MALICIOUS

PDF

76.4 KB Created: 2021-06-09 19:55:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 523c4321e37e98bb8b944999087c9156 SHA-1: 05bc7890cfe6c18449028c2aa15f64d3d00bd94a SHA-256: 2e5d354238f81f7e555b43ebb78c679d12200b89f81e43341859cc17238e368b
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL pointing to 'garglob.ru', which is likely part of a phishing or malware distribution scheme. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' further indicates malicious intent, suggesting the document is designed to redirect users to potentially harmful sites.

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://garglob.ru/pbw?utm_term=5+point+scale+template PDF link annotation
    • https://wisowoturap.weebly.com/uploads/1/3/1/4/131453432/343cbe5cf.pdfIn PDF document text
    • https://likemopulijufo.weebly.com/uploads/1/3/0/7/130739197/lexujoxaxal.pdfIn PDF document text
    • https://sufudavinor.weebly.com/uploads/1/3/1/3/131381021/8087363.pdfIn PDF document text
    • https://fumunavizagoz.weebly.com/uploads/1/3/4/2/134235019/9858925.pdfIn PDF document text
    • https://xikemusuvef.weebly.com/uploads/1/3/4/3/134322181/c4a3797c8.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://dimutojopog.pbworks.com/f/39068595807.pdfIn PDF document text
    • http://mikabipi.pbworks.com/f/6505398217.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5e080c6-fb2e-4bbd-b0e5-fb9b607796d8/breadman_ultimate_plus_instruction_manual.pdfIn PDF document text
    • http://kigiputilik.pbworks.com/w/file/fetch/144687105/complementary_medicine_an_overview_ielts_reading_answers_test_9.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bf58530-815d-4f53-b473-7be05e368430/29718792380.pdfIn PDF document text
    • http://kufujibumufa.pbworks.com/w/file/fetch/144411645/how_to_connect_vizio_wireless_sound_bar.pdfIn PDF document text
    • http://goferupemo.pbworks.com/f/nba_2k20_downloading_game_updates_stuck_at_0.pdfIn PDF document text
    • http://wotasaful.pbworks.com/w/file/fetch/144455607/biwonagojumap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83a0a68b-e8d4-424c-9f5a-3e5ffbe03ddc/27114809627.pdfIn PDF document text
    • http://pikalunik.pbworks.com/f/59484808861.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7a770cc-69ee-4f2f-84f7-2f311674813c/charging_ps4_controller_with_samsung_charger.pdfIn PDF document text
    • http://giwupiraride.pbworks.com/f/39386394421.pdfIn PDF document text
    • http://mulasamesi.pbworks.com/w/file/fetch/144513969/64826629889.pdfIn PDF document text
    • http://kepigiwup.pbworks.com/f/photostage_slideshow_producer_professional_espaol_full.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7ab5ebf-19b3-4db6-8102-fa2d10243239/87050998711.pdfIn PDF document text
    • http://gosirata.pbworks.com/f/11826336577.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_off0000e201.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE201 4800 bytes
SHA-256: 1ceddef5261f08670a6b1fa0c8f703690ff107660d4b13e628b5ad91b3f5cd43
font_01_sfnt_off0000f231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF231 10720 bytes
SHA-256: 8217052321871a9d9934bee68fc90f96ae6faa9d5934dffc097af48f97163fd8
font_02_sfnt_off00011685.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11685 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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