Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e654cfd1670d517…

MALICIOUS

PDF

71.8 KB Created: 2021-06-03 21:00:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: fe47c8ba3da7b85643dc599f56923d49 SHA-1: 532a1236210169a45b002e7a8e03309c8dc70690 SHA-256: 0e654cfd1670d5171219673a399caebe3f3157fcadaca6b4336d368fe928a051
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 0.9992

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://seumenha.ru/123?utm_term=loxon+block+surfacer+data+sheet PDF link annotation
    • https://lenagalazipanom.weebly.com/uploads/1/3/5/3/135310064/nolifabimamovizodiz.pdfIn PDF document text
    • https://lerinaxupol.weebly.com/uploads/1/3/4/6/134662503/5268070.pdfIn PDF document text
    • https://xidiziwuzubiwon.weebly.com/uploads/1/3/4/6/134653180/44bfc6991169.pdfIn PDF document text
    • https://vimebadexij.weebly.com/uploads/1/3/5/2/135295776/5778698.pdfIn PDF document text
    • https://rotalexabif.weebly.com/uploads/1/3/1/3/131381819/xogotedagepab.pdfIn PDF document text
    • https://melivuwupazadog.weebly.com/uploads/1/3/4/7/134721584/a342c4dd02080.pdfIn PDF document text
    • https://zosafetudosejo.weebly.com/uploads/1/3/4/6/134670517/korivebeg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dipoziw.pbworks.com/w/file/fetch/144451248/autocad_architecture_2019_manual.pdfIn PDF document text
    • http://magogopowo.pbworks.com/f/is_dish_network_good_for_gaming.pdfIn PDF document text
    • http://mefijunov.pbworks.com/w/file/fetch/144416883/music_notation_ks2_worksheet.pdfIn PDF document text
    • http://paderukut.pbworks.com/w/file/fetch/144438234/bluestacks_download_for_pc_apkpure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81a6cad7-673f-4341-b5a9-ed3f9a9dff47/87454304476.pdfIn PDF document text
    • http://vifogajo.pbworks.com/f/how_do_i_know_when_to_replace_dyson_battery.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/015b0c6a-3b78-42ad-a4d5-dcd566754be4/smart_camera_phone_price_in_bd.pdfIn PDF document text
    • http://volikedejefa.pbworks.com/w/file/fetch/144419196/modern_spanish_grammar_download.pdfIn PDF document text
    • http://gupiguna.pbworks.com/f/how_do_you_program_a_uniden_police_scanner.pdfIn PDF document text
    • http://xojifot.pbworks.com/f/how_much_to_recover_a_lazy_boy_recliner.pdfIn PDF document text
    • http://mosijiv.pbworks.com/w/file/fetch/144423996/carrom_disc_pool_aim_hack_version.pdfIn PDF document text
    • http://xugilip.pbworks.com/f/les_adjectifs_possessifs_exercices_corrigs.pdfIn PDF document text
    • http://fevosezew.pbworks.com/f/83471720573.pdfIn PDF document text
    • http://mizunebapod.pbworks.com/f/what_to_say_performance_review.pdfIn PDF document text
    • http://kimotamiju.pbworks.com/w/file/fetch/144517455/kekisenisaga.pdfIn PDF document text
    • http://visetululiv.pbworks.com/w/file/fetch/144416160/73574146546.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_off0000d741.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD741 5320 bytes
SHA-256: 0c9d565ea0f9fd39bfd181d2da64f73f7e135f424821d43e6a0119eb6e5d04d3
font_01_sfnt_off0000e953.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE953 11332 bytes
SHA-256: 4330a423b8d2982d76bae65079ef62d3fc0426209aad4359cd694f65d2c4a29f