Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a44458f51fae4d6…

MALICIOUS

PDF

71.2 KB Created: 2021-02-28 03:33:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 3a03f0f32efb80450f29b836f12ce348 SHA-1: 8d4edbe64e7559c89dc1604af879827023296b3a SHA-256: 5a44458f51fae4d6ab57e436e71c7b1c939faf3872f8dc21a0f1eeed7ec33903
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://zajinet.ru/wix?keyword=hi+i%2527ll+be+your+guide+lyrics PDF link annotation
    • http://gapagal.mywebcommunity.org/how_to_use_mr_slim_remote_control.pdfIn PDF document text
    • http://giwosoto.sportsontheweb.net/hp_pavilion_dv6000_technical_specifications.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4530036/normal_5fc70e2e2290f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419452/normal_601662411a213.pdfIn PDF document text
    • https://cdn.sqhk.co/wekonexiw/jdjgYBJ/space_shuttle_launch_live_cam.pdfIn PDF document text
    • https://cdn.sqhk.co/xeduwukaxusa/jighH1r/ap_world_history_project_ideas.pdfIn PDF document text
    • http://zuzorovix.scienceontheweb.net/nimzowitsch_my_system_games.pdfIn PDF document text
    • http://pigigozoruda.mypressonline.com/70287271692.pdfIn PDF document text
    • https://cdn.sqhk.co/gelowidabik/IigV1oo/mirror_lake_inn_lake_placid.pdfIn PDF document text
    • https://cdn.sqhk.co/wekaradukuve/jfLW0vH/medibang_paint_make_art_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/rifojimuna/iaXLihy/86193221960.pdfIn PDF document text
    • http://lorewipa.scienceontheweb.net/57877401824.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://newemepakirid.myartsonline.com/asus_rt-n12_3_in_1_router_setup.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_off0000dacb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDACB 5132 bytes
SHA-256: 6097dcb663800a7a9437b31edd6a57fb5a4667a6edbf036a1f9d441df7349bb6
font_01_sfnt_off0000ec5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC5F 10344 bytes
SHA-256: 1647b2be75a2bd6b08eec3e883fb52adde9eaecdc3ce9ab35b71643065040a69