Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a9acac7371aeb47…

MALICIOUS

PDF

67.8 KB Created: 2021-02-16 17:59:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 62fceebb472c20160354dd32e10a626e SHA-1: ffb52d0d6ccb5b3fe4ce2acc57a9cc4ad45bb477 SHA-256: 1a9acac7371aeb4767f7f1803e6f8d417a908cb556c45cbe2bb591d46b1f2f40
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/123?utm_term=chapter+10+the+endocrine+system+worksheet+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4414680/normal_600fda1b714e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426819/normal_6014d58d27d41.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375203/normal_5ff541c2f2da4.pdfIn PDF document text
    • https://cdn.sqhk.co/vanewano/VEhdjbe/134472728.pdfIn PDF document text
    • http://s-tochka.ru/elementor_template_types287kv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411918/normal_5fcd41978652d.pdfIn PDF document text
    • http://vinorama.fun/asana_pranayama_mudra_bandha_italianoynlxc.pdfIn PDF document text
    • http://metalllift.ru/teologia_biblica_y_sistematica_myer_pearlman_wordk6jgv.pdfIn PDF document text
    • http://itslm.fun/61722006003ojhce.pdfIn PDF document text
    • http://blockhcain.host/phtls_8th_edition5c58g.pdfIn PDF document text
    • https://cdn.sqhk.co/sewadokoka/hdDejeP/best_decks_in_hearthstone_october_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/fewukise/Pjf5hbG/private_browser_aloha_apk_download.pdfIn PDF document text
    • http://wowitaly.space/can_you_keep_a_secret_sophie_kinsella_vk48gwi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368504/normal_601683937cce1.pdfIn PDF document text
    • https://cdn.sqhk.co/vopofuxo/np37aje/87757231640.pdfIn PDF document text
    • https://cdn.sqhk.co/bomemenun/ZmDmib7/xibefazesugegelilewof.pdfIn PDF document text
    • http://xploitcrew.io/fakupebalej1u84.pdfIn PDF document text
    • https://cdn.sqhk.co/fapolokid/ghbWnuv/91417334407.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_off0000cd50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD50 5640 bytes
SHA-256: df21f9535ae8caeb6744ce623e61af33845bdc148b6278c457b4a35a7ebed50e
font_01_sfnt_off0000e065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE065 9764 bytes
SHA-256: 8b6c724a18ef60526d9b7316910e85903d2a9d18eb72f5768179842c7d3b560a