Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7dad2ce3d480b67…

MALICIOUS

PDF

68.2 KB Created: 2021-02-09 21:52:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 77b60d1ca2799d10901a0f13ad7b621d SHA-1: a7d295ef2a54ef27c82f1964b186df5f89081a47 SHA-256: a7dad2ce3d480b677b4668f9b778f53959b1fcd103127d48f01caa0ab971671b
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/123?utm_term=zeta+designs+furniture In PDF document text
    • https://cdn.sqhk.co/rakapuvad/VBWjbw3/19237976311.pdfIn PDF document text
    • http://fartook.online/skinny_love_pianop5ug4.pdfIn PDF document text
    • https://mobefoba.weebly.com/uploads/1/3/0/7/130776725/9ae404.pdfIn PDF document text
    • http://ita-yog.space/fofawumexidakejezaloq6107.pdfIn PDF document text
    • http://mikrotikwizard.com/kadamban_tamil_movie_songs_free_starmusiqdpw4h.pdfIn PDF document text
    • http://reduslim-italiaoficial.site/toy_story_rc_racer_ride_paris1fgl9.pdfIn PDF document text
    • http://helpcenter.business/coaching_registration_form_formatfa5ar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467975/normal_601437663a661.pdfIn PDF document text
    • http://svoydvalend.xyz/family_guy_quest_for_stuff_hack615nt.pdfIn PDF document text
    • http://top-agent.ru/toshiba_elan_touchpad_drivergho59.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375908/normal_5ffed0e746724.pdfIn PDF document text
    • https://famonusowofem.weebly.com/uploads/1/3/4/3/134349488/ce3532539a1.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/pexodugosa/android_tv_apps_on_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/jotizifime/missy_elliott_alyson_stoner_2019_vma_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/wejajulurivezivi.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_off0000d051.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD051 5000 bytes
SHA-256: 079dacae2454b75c43711b31404a64a689004024b700be86e3b65128bcab1d16
font_01_sfnt_off0000e169.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE169 10188 bytes
SHA-256: 521ed692a23b1702822ffc46c39474f9eae6c756ffeaae53f1e5bac3124a8320