Malicious PDF — malware analysis report

Static analysis result for SHA-256 dffbb02736402d03…

MALICIOUS

PDF

72.6 KB Created: 2021-02-19 09:06:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d82858b1da1f8aa6e0e980af5804fd6f SHA-1: d72cb061e9c2c17f1a7c67acaf2132cf2fd3aad6 SHA-256: dffbb02736402d0366d86d722879144888211784de26637a571630ddb81b9fa1
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/aws?utm_term=harry+potter+and+the+order+of+the+phoenix+chapter+11 PDF link annotation
    • https://dozisinabi.weebly.com/uploads/1/3/4/6/134646642/a8e3ba2e358d237.pdfIn PDF document text
    • https://texodixoxi.weebly.com/uploads/1/3/1/8/131857215/xitetamugodam_vanipuli_josinudur.pdfIn PDF document text
    • http://pefujogori.iblogger.org/98309264374.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381735/normal_5fedbbf751575.pdfIn PDF document text
    • http://yourlivehelp.com/tamilrockers_dubbed_movies_hd_720pwxvza.pdfIn PDF document text
    • http://official-win.xyz/kuwokedusuvevx7zm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479224/normal_5ff90873503ee.pdfIn PDF document text
    • http://guwejusu.22web.org/canon_camera_tutorials.pdfIn PDF document text
    • http://tk-pobeda.site/58601444080ot401.pdfIn PDF document text
    • http://prizinsta365.website/20405720390hj9aw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/42902089228.pdfIn PDF document text
    • https://s3.amazonaws.com/lukepepe/diablo_2_necromancer_stats_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/koremipozosumebuxegunetot.pdfIn PDF document text
    • http://vosimamasi.epizy.com/enormous_turnip_story.pdfIn PDF document text
    • http://guxenubegipus.epizy.com/kendo_ui_template_click_event.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_off0000e0e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E7 5216 bytes
SHA-256: e83450b79f4ddd22d71e7a6e90512dd27cd856c44d9f1eaf858a0d7814d1ac68
font_01_sfnt_off0000f2b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2B2 10136 bytes
SHA-256: d73abafc6d72e33f45c3e349dab9b2885005147c0ff69606cf1c4c79e5384ac3