Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6fc80587def0331…

MALICIOUS

PDF

78.2 KB Created: 2021-04-29 02:10:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a9096f8fc1bdfd02c8f288b5f3a4e0b7 SHA-1: 745402e5a85cb92d747f80b87de502464c6198b3 SHA-256: d6fc80587def03318bf73bbfe412e7690f35846001ba336a272bb0861c938180
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-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/strik?utm_term=blackmagic+intensity+pro+installation PDF link annotation
    • https://cdn.sqhk.co/sevijeruba/e1Rsmo7/nunovewurilokusovazajig.pdfIn PDF document text
    • http://sidegut.22web.org/bizodijazozupal.pdfIn PDF document text
    • http://zawubitukete.22web.org/how_to_replace_drum_cartridge_xerox_3215.pdfIn PDF document text
    • https://cdn.sqhk.co/poxudanefisi/7gijfha/86485049042.pdfIn PDF document text
    • https://cdn.sqhk.co/kafexobesa/jgNicib/top_country_music_songs_2015.pdfIn PDF document text
    • http://xbet1.fun/the_heiress_movie_2019_plotoxtir.pdfIn PDF document text
    • https://cdn.sqhk.co/xegunorasu/ipI8hg6/felifotomilere.pdfIn PDF document text
    • https://cdn.sqhk.co/tobamozusaj/P7nijeL/14426875552.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424997/normal_5fec31b8c2aec.pdfIn PDF document text
    • https://cdn.sqhk.co/wolebiduju/ijrhj9v/34099939811.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447431/normal_6017f9d510246.pdfIn PDF document text
    • http://cmb-societe.com/allok_video_converter_for_computerikvi5.pdfIn PDF document text
    • http://funuvumolifedaj.iblogger.org/is_the_rap_game_cancelled_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/retesixabe/g42xpAl/39008149127.pdfIn PDF document text
    • http://keysecret.ru/4666626899681uvt.pdfIn PDF document text
    • http://lnstagramverifiedbadgeservice.com/degagetikirukejesaxum9n7qv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505837/normal_6049359e912c4.pdfIn PDF document text
    • http://obzorov.site/jitavabisomisazebubibinung75u7.pdfIn PDF document text
    • https://cdn.sqhk.co/webuzifinuno/hbibThh/23925293596.pdfIn PDF document text
    • https://cdn.sqhk.co/gosukutusu/wQDoghF/raid_heroes_total_war_hacked_apk.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/9c85f2fe-016c-4fbf-9d5e-4fac38164538/spalding_portable_basketball_hoop_assembly_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99ba32c4-3526-4ea8-ac89-d663cfdea255/how_to_fuse_pellon_interfacing.pdfIn PDF document text
    • http://bakenexiradofo.epizy.com/gogewibozuxopifamax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fabc221-ef60-441b-9ff3-489b6df1a5dc/whirlpool_gold_quiet_partner_iv_clean_filter.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_off0000f0bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0BB 5468 bytes
SHA-256: bbec496e08385711d5adfd588470e834dd9882233b40849807cd663886d97994
font_01_sfnt_off00010354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10354 11528 bytes
SHA-256: 6267b7c4272dff408527005c01a2a15f9d828cb6935cd80b6e93bf6eb878fe10

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