Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad076313060b6195…

MALICIOUS

PDF

67.1 KB Created: 2021-02-13 11:38:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 12b61cc0651f88b831d2b8f0b4b5f942 SHA-1: 9518d719379594fd4fce25e559f6be81944828f8 SHA-256: ad076313060b619597119b629e3b442a3c37e970f1e0124ce258715f5a611336
244 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
  • 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 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.
  • 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://yafferge.ru/wix?keyword=spongebob+saw+game+unblocked In PDF document text
    • https://cdn.sqhk.co/padixemugex/KojhfUe/counted_cross_stitch_world_map.pdfIn PDF document text
    • https://xawizavikerid.weebly.com/uploads/1/3/4/5/134525990/badojogupuxi_tizezot_jefupinukipi.pdfIn PDF document text
    • http://ranixora.iblogger.org/a4_brochure_template_photoshop_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377931/normal_60099e6932850.pdfIn PDF document text
    • https://cdn.sqhk.co/mifigatira/IgjhhlH/kozalipuvenoxos.pdfIn PDF document text
    • https://vafukomoruf.weebly.com/uploads/1/3/4/8/134862603/diwurorazoru-tazokokiba-zegetabifesas.pdfIn PDF document text
    • https://cdn.sqhk.co/zimajigon/KhbH3r1/bubble_shooter_crack_pc_game_setup_download.pdfIn PDF document text
    • https://foraketarikovef.weebly.com/uploads/1/3/4/6/134608655/52b524.pdfIn PDF document text
    • http://bepebeku.22web.org/38105830372.pdfIn PDF document text
    • https://fowaloxew.weebly.com/uploads/1/3/4/8/134881160/xidetojevemuti-zemupa-bufimifise-lusetajodam.pdfIn PDF document text
    • http://lidzadva.xyz/ap_music_theory_study_guidez41ic.pdfIn PDF document text
    • https://cdn.sqhk.co/tisufupujeli/eig0m8w/labesobujerekalago.pdfIn PDF document text
    • https://vedewoxid.weebly.com/uploads/1/3/0/7/130738666/nobirukuxusedokibene.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nupejodolet.epizy.com/hydrogeological_report.pdfIn PDF document text
    • http://wekikoki.rf.gd/30542575126.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_off0000c8ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8EE 5696 bytes
SHA-256: 441211cb8ef771e219315f89388acbd917cb540fa88b141b43d81d075983b7a2
font_01_sfnt_off0000dc58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC58 10304 bytes
SHA-256: 764cdcfc399e67775e870a69cd6050cfcefbb62444feb00892b92ba218643e0b

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