Malicious PDF — malware analysis report

Static analysis result for SHA-256 3322b1a1bb4f9bba…

MALICIOUS

PDF

70.7 KB Created: 2021-02-14 16:37:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a6a628b1c55a16942f24485360a8f530 SHA-1: b71d6082fffd066950dee85b036d813f3e06c7ab SHA-256: 3322b1a1bb4f9bbabb03376971a462911cc2f8aff08f10ddf6543ffd0a3516e7
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://druttle.ru/wix?keyword=drastic+apk+full+espa%25C3%25B1ol PDF link annotation
    • https://cdn.sqhk.co/gonolesuzam/dp9hbIR/30016946228.pdfIn PDF document text
    • https://cdn.sqhk.co/bemoranoz/gQehdSf/74503612291.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368505/normal_5fdad2050216c.pdfIn PDF document text
    • https://cdn.sqhk.co/dubutemaruxu/hc0z3ja/msx_games_emulator_online.pdfIn PDF document text
    • http://vafakewa.iblogger.org/gezasun.pdfIn PDF document text
    • https://cdn.sqhk.co/ravuviwidi/ijgfVo0/ice_hockey_shops_melbourne.pdfIn PDF document text
    • https://vunusamonumated.weebly.com/uploads/1/3/4/0/134040658/9016267.pdfIn PDF document text
    • https://cdn.sqhk.co/ganuniwiku/jzSgcia/91104445647.pdfIn PDF document text
    • https://jovinafunen.weebly.com/uploads/1/3/2/6/132695325/1594784.pdfIn PDF document text
    • https://milarenu.weebly.com/uploads/1/3/2/8/132814898/5556565.pdfIn PDF document text
    • https://cdn.sqhk.co/vutexexukus/l8Rgjhj/old_keyboard_connector_name.pdfIn PDF document text
    • https://cdn.sqhk.co/zativojor/VjdVEjc/zebiwovunawanikobimabuke.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417519/normal_602626a523ba4.pdfIn PDF document text
    • https://lodipopigib.weebly.com/uploads/1/3/1/8/131857338/sixuxifu_pewudasa_lonuxesobili_xipigevetep.pdfIn PDF document text
    • https://cdn.sqhk.co/xudevekelefe/iherGji/zombieland_saga_3d_animation.pdfIn PDF document text
    • https://cdn.sqhk.co/kewudomavave/brDhi7X/green_bubble_tip_anemone_care.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487419/normal_6010463516019.pdfIn PDF document text
    • https://cdn.sqhk.co/bumogebiz/chc6jeZ/no_bake_keto_mug_cake.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gojaxuga.epizy.com/kekaha_kai_surf_report.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_off0000d63c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD63C 5284 bytes
SHA-256: e79a146c56f3876a801f344497c84fc09ef857931778762c42060b6ada1b4b01
font_01_sfnt_off0000e811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE811 10748 bytes
SHA-256: ea4012753bf9677beb86b462971d007d9f387344fd302dbc4999134086dbf8a0