Malicious PDF — malware analysis report

Static analysis result for SHA-256 07269626b1ef045a…

MALICIOUS

PDF

75.7 KB Created: 2021-03-06 06:21:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: b1c4e19f6ba3edb6249fcaff040ff8d6 SHA-1: cffdd2f5ef775ee87b6a202cf28b1fc6f79c5084 SHA-256: 07269626b1ef045a636c9cd8a1e993876e7dbc391fa620c931688a54c6f256b0
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains numerous external URIs, many hosted on disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URLs are likely used to redirect the user to a malicious site, potentially for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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/strik?utm_term=what+was+the+first+rap+song+to+win+a+grammy PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369166/normal_603eec28e7890.pdfIn PDF document text
    • http://winfreeiphone.xyz/sowigagatimanazukevufc130h.pdfIn PDF document text
    • http://beruzogumuxab.22web.org/top_rpg_offline_android_games_2018.pdfIn PDF document text
    • http://robinmani.site/a_canticle_for_leibowitz_map75dz2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483608/normal_6004f33c3b974.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424637/normal_5fcb0fef61e72.pdfIn PDF document text
    • http://help-lnstagramcopyrights-verify.com/what_are_the_elements_of_film_score_meansoy2r.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448746/normal_602266e9e31ab.pdfIn PDF document text
    • http://dakajak.medianewsonline.com/27945267794.pdfIn PDF document text
    • http://air-calm2.club/powizunujibikapirumisalub3dsry.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450513/normal_5fe5f97731a8b.pdfIn PDF document text
    • http://vitofemegawe.getenjoyment.net/funisek.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383791/normal_603bd29e353e1.pdfIn PDF document text
    • http://segway-wheelchair.ru/nightcore_monster_freet6jek.pdfIn PDF document text
    • http://furniture21.online/zaziwowasebamozimhnl0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379379/normal_601b618f56805.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371248/normal_6007ab74bee7a.pdfIn PDF document text
    • http://vevufilusik.scienceontheweb.net/openpilot_cc3d_evo_flight_controller.pdfIn PDF document text
    • http://ragesedanem.iblogger.org/road_traffic_accident_reports_uk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lukigek.rf.gd/nebemutopizomukaxifofavum.pdfIn PDF document text
    • http://vekemelegewimo.atwebpages.com/shopsmith_scroll_saw.pdfIn PDF document text
    • http://tulajadulixo.myartsonline.com/what_is_a_certificate_of_readiness_in_divorce.pdfIn PDF document text
    • http://widamifikifewex.epizy.com/xoxevolofibu.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_off0000eab5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAB5 5492 bytes
SHA-256: 43ee3ba9fa6f3afc70e6f15f02d9f33465907fb0a91c5e929de885359e1b4d69
font_01_sfnt_off0000fd5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD5E 10500 bytes
SHA-256: 1492f90af7908d0ba1f0e67f16323df56fff8f7f8e1bd88eb53a4a7618ced63c

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