Malicious PDF — malware analysis report

Static analysis result for SHA-256 a981a1ddb7c355e0…

MALICIOUS

PDF

71.2 KB Created: 2021-03-24 03:11:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6c2f7c29d32b4e3d49abcc1a38d9a0ff SHA-1: 16d12de1ed445f2fdf324d1fccea62fb13c159a4 SHA-256: a981a1ddb7c355e0fe615298dbd988812e0269ef75eb5fce56126f72e8768526
126 Risk Score

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-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://jacksth.ru/wix?keyword=dk+eyewitness+guide+to+istanbul PDF link annotation
    • http://keepmaxi.space/desufedujijafoweviwzc6g.pdfIn PDF document text
    • http://bazufilonunax.iblogger.org/a_dolls_house_characters_act_1.pdfIn PDF document text
    • http://shop-you.xyz/73694510343ikjdv.pdfIn PDF document text
    • https://cdn.sqhk.co/zozevuxe/ejigeJL/pifowibumafumabaf.pdfIn PDF document text
    • http://ses-paypal.com/jeepers_creepers_3_download_720pcphco.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwefuxab/3hhpDgh/harvest_market_fort_bragg.pdfIn PDF document text
    • https://botabire.weebly.com/uploads/1/3/4/6/134629411/fomisig-fagizarawegobed-birepa.pdfIn PDF document text
    • http://abreudesigns.com/511972282850e25n.pdfIn PDF document text
    • http://mbfsopg.com/blade_runner_2049_mp4moviez_hindilxvee.pdfIn PDF document text
    • http://usecabinets.xyz/magokihybjk.pdfIn PDF document text
    • http://vuvuga.xyz/marlin_336_lever_action_rifles_for_sale017cg.pdfIn PDF document text
    • http://love-cosmetics.shop/la_siesta_del_martes_english_summaryywpsr.pdfIn PDF document text
    • https://xuwumiguxapizif.weebly.com/uploads/1/3/0/7/130739656/b3d6726c0a5.pdfIn PDF document text
    • http://megalit-korolev.ru/police_report_san_francisco_online4p65p.pdfIn PDF document text
    • https://kivalake.weebly.com/uploads/1/3/4/8/134885121/mitujalobox.pdfIn PDF document text
    • https://cdn.sqhk.co/xuvisisitinu/rJRiaD8/piano_tutorial_faded_slow.pdfIn PDF document text
    • https://cdn.sqhk.co/dolafita/hVdnjd7/world_at_war_zombies_maps_ps3.pdfIn PDF document text
    • https://duguzimelape.weebly.com/uploads/1/3/4/6/134666192/duxofinof_pegamid_vesila.pdfIn PDF document text
    • https://cdn.sqhk.co/sakupiraf/Qjh5gi6/mappa_choppa_fortnite.pdfIn PDF document text
    • http://blancop.xyz/30909989112pfq3y.pdfIn PDF document text
    • http://qwert-ita.fun/tazigibowatujosupikem3idu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kubuxakul.epizy.com/ap_aadhar_card.pdfIn PDF document text
    • http://jidukoni.rf.gd/agribusiness_in_kenya.pdfIn PDF document text
    • http://bepinutarefe.rf.gd/super_mario_bros_2_music_sheet.pdfIn PDF document text
    • http://ludilisi.epizy.com/xezife.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9E6 5292 bytes
SHA-256: 9dc67d62d0c47e8b6f44723687ec064e931f77958624db86473892864871abd1
font_01_sfnt_off0000ec20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC20 10684 bytes
SHA-256: 948d4a590adc92bb9e320eba6c42ce5d60d690754d3c5544937da94a7874e5b6

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