Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a78dd0a5ded73c8…

MALICIOUS

PDF

69.4 KB Created: 2021-03-04 05:08:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: bbc5a9e2209c430fede9bce102bd8268 SHA-1: c14fb380cbfa939c9a6ba37db0a7ad94c9e8e6d0 SHA-256: 3a78dd0a5ded73c80c5b2110191fcc4236a23676ecdbfdea5fc1d6075a010bcc
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pelibifir.ru/award?keyword=ross+jeffries+unstoppable+confidence+pdf PDF link annotation
    • http://sdek-24.cc/37029678568xjrqd.pdfIn PDF document text
    • http://muldwych.com/mushroom_level_stardewpsmsc.pdfIn PDF document text
    • http://dress-russia.ru/newil3k5f4.pdfIn PDF document text
    • https://moxigowa.weebly.com/uploads/1/3/0/8/130814106/gisexujutajabulapox.pdfIn PDF document text
    • http://usacreditreport.info/19768600807cua5.pdfIn PDF document text
    • https://wejerimaz.weebly.com/uploads/1/3/4/6/134648800/8943544.pdfIn PDF document text
    • http://opt05.ru/kewuzezinexuzebiwiijf2h.pdfIn PDF document text
    • http://tomifopa.iblogger.org/drinkwell_mini_pet_fountain_replacement_pump.pdfIn PDF document text
    • https://viwosexoteb.weebly.com/uploads/1/3/4/6/134631328/8329055.pdfIn PDF document text
    • https://nesipemuwazona.weebly.com/uploads/1/3/4/8/134881126/fed15a98.pdfIn PDF document text
    • https://xovadodelemowuz.weebly.com/uploads/1/3/1/3/131383330/ecf17591d4338e4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xinozotaga.rf.gd/63058507875.pdfIn PDF document text
    • http://fofifalog.rf.gd/phenol-_formaldehyde_resin_is_commercially_called.pdfIn PDF document text
    • http://vurorawoguw.rf.gd/windows_small_business_server_2011_standard_iso_download.pdfIn PDF document text
    • http://gogufujupi.rf.gd/top_sound_booster_for_android.pdfIn PDF document text
    • http://sajetowariwi.rf.gd/dell_precision_m4600_manual.pdfIn PDF document text
    • http://xofunuxemijowex.rf.gd/bluestacks_upgrade_android_version.pdfIn PDF document text
    • http://webekilijonelew.epizy.com/construction_phase_plan_template_free_download.pdfIn PDF document text
    • http://wominilagovujul.epizy.com/dd_players_handbook_5e_color.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_off0000d226.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD226 5372 bytes
SHA-256: befab5cc675f3dc9d3b5e92b83bdf84a843b7d845100d7686b5dd15259968e68
font_01_sfnt_off0000e47a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE47A 10328 bytes
SHA-256: b6e052010ee380bde3d7a92a8ecc19422608535f9141603f17f1a55f4b70bd2e