Malicious PDF — malware analysis report

Static analysis result for SHA-256 89fe4727af84c7d5…

MALICIOUS

PDF

102.2 KB Created: 2021-03-19 13:39:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0b8751cecd40c055fb6058db05461314 SHA-1: 578aca8e6e471ec5811b1872d422aa5ef31f6fb6 SHA-256: 89fe4727af84c7d5a341ecff5c0a1320abcc8dd60efff22eaa97b83a06b08589
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dugedepap.ru/award?keyword=company+profile+design+pdf PDF link annotation
    • http://sq11mini.com/research_articles_on_employee_absenteeism946qe.pdfIn PDF document text
    • http://0fruits.space/temple_run_2_lost_jungle_game_playg85te.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvurero/ezxGnaQ/residence_inn_las_vegas_dean_martin_drive.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476767/normal_60050ccd5d459.pdfIn PDF document text
    • https://cdn.sqhk.co/tedigedubemi/haEjejj/fujewigegoxoguzi.pdfIn PDF document text
    • http://kfnwejfnkwheklf.space/fapolonin6fji.pdfIn PDF document text
    • http://copyrightsafetyhelps.com/vedeluyexu.pdfIn PDF document text
    • http://itchia.space/chromagun_ps4_trophy_guide0cz0b.pdfIn PDF document text
    • http://odebayitrafikhizmeti.com/mary_shelley_frankenstein_norton_critical_editionydi8k.pdfIn PDF document text
    • http://tersq.fun/97340164286rvbpx.pdfIn PDF document text
    • https://cdn.sqhk.co/serodozire/xujcLh9/chili_s_menu_nutrition_guide.pdfIn PDF document text
    • http://akfb.online/what_a_wonderful_world_piano_sheet_md9lbm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475863/normal_5fea1f4905e38.pdfIn PDF document text
    • https://cdn.sqhk.co/vujejanar/iFQhdjb/salitewepuxemupasilosakim.pdfIn PDF document text
    • https://cdn.sqhk.co/sulugedako/fAQ0bgj/ruwapizebajo.pdfIn PDF document text
    • http://good-production18.site/ti_89_titanium_emulator_windowsivcbk.pdfIn PDF document text
    • http://visionnew.xyz/uncertainty_principle_equation_massuxadk.pdfIn PDF document text
    • http://virnet77.ru/32259943088qtprb.pdfIn PDF document text
    • http://erogan-encolumbia.site/44085243859f1s0t.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368223/normal_603fabde22f6a.pdfIn PDF document text
    • http://hotsales-com.xyz/kenwood_ddx512_bluetooth_adapterbgesu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/99d2db93-d5e0-41ce-9689-a26667ab94c3/onn_bluetooth_headset_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/983feedc-528c-4348-a4ec-d1321de2973e/is_lincoln_mkt_2012_a_good_car.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014fc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14FC9 5368 bytes
SHA-256: 7f21166037c2d58232306b22bd8a45a03845d5972b71c524391b5d489b692d50
font_01_sfnt_off000161fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x161FA 12060 bytes
SHA-256: 1445b6b69483eec7818c361685757db786e7e957be1a7a8b7e37e9645fecfa0c

Open this report in the interactive analyzer, or submit your own file for analysis.