Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ac9f0c846b9cf14…

MALICIOUS

PDF

70.8 KB Created: 2021-01-19 10:03:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: b7c29ab8cd1484134fedeec70aa7ed7b SHA-1: e09c8525e64ec5e55d9d26d1172735b8fe68ae29 SHA-256: 7ac9f0c846b9cf14ac25867507e21050cb6b731b49f7430cab8f667e0a498d05
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafftec.ru/aws?utm_term=adverbios+de+lugar+ejercicios+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451744/normal_5fa6e14eb0410.pdfIn PDF document text
    • https://site-1174816.mozfiles.com/files/1174816/basketball_stars_nick_3.pdfIn PDF document text
    • https://site-1173293.mozfiles.com/files/1173293/72463870295.pdfIn PDF document text
    • https://degitigurot.weebly.com/uploads/1/3/4/3/134337886/9290006.pdfIn PDF document text
    • https://site-1171658.mozfiles.com/files/1171658/rechargeable_digital_hearing_aid_vhp-_203s.pdfIn PDF document text
    • https://cdn.sqhk.co/xadowififux/d1hfgj5/46594362430.pdfIn PDF document text
    • https://sufifova.weebly.com/uploads/1/3/4/7/134736026/4249360.pdfIn PDF document text
    • https://cdn.sqhk.co/nasanoroge/giXx6ji/nidix.pdfIn PDF document text
    • https://nokurujifeseg.weebly.com/uploads/1/3/4/3/134355409/madirogukowala_rapawusuke_tupodo_lulanezap.pdfIn PDF document text
    • https://site-1178709.mozfiles.com/files/1178709/marvin_gaye_best_songs_youtube.pdfIn PDF document text
    • https://cdn.sqhk.co/moxulofilose/1zh6Ngh/screen_recorder_ios_5c.pdfIn PDF document text
    • https://site-1176776.mozfiles.com/files/1176776/funny_games_imdb_parents_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/temejikowewa/eyjfLic/monster_truck_crushing_cars_games.pdfIn PDF document text
    • https://site-1168276.mozfiles.com/files/1168276/21402045223.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417418/normal_5fe2554ac0300.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496148/normal_5fb970aa2b892.pdfIn PDF document text
    • https://cdn.sqhk.co/kinibemazoz/OhhEjd9/94780508570.pdfIn PDF document text
    • https://site-1225090.mozfiles.com/files/1225090/38989173394.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d53c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD53C 5588 bytes
SHA-256: b8b891c1b086b65c9f07f96ecef1c45be596df87ede7736db808397a99752333
font_01_sfnt_off0000e858.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE858 11200 bytes
SHA-256: f1385bc752247481f9a361c7d235e5bf95c99cdd263ef2958bad811681e4988a

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