Malicious PDF — malware analysis report

Static analysis result for SHA-256 15083d7cb2c5d82f…

MALICIOUS

PDF

74.6 KB Created: 2021-03-08 12:11:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 98bbb9f8f17310a322bafc803069f860 SHA-1: 5177b206232e9482f6890880a916d90afa17cbcc SHA-256: 15083d7cb2c5d82f6134791fb73cab07712a49f05a937ad0b801a5c9be030703
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/award?keyword=physical+therapy+exercises+for+herniated+disc+pdf PDF link annotation
    • https://domisupufiz.weebly.com/uploads/1/3/5/3/135316273/fenomogebaruv.pdfIn PDF document text
    • https://vidokabotofasi.weebly.com/uploads/1/3/4/8/134868814/zewebu.pdfIn PDF document text
    • https://porovepo.weebly.com/uploads/1/3/4/5/134527374/1862880.pdfIn PDF document text
    • https://cdn.sqhk.co/nolagutotato/2giyojf/ultimate_3d_classics_car_rally_mod_apk_rexdl.pdfIn PDF document text
    • https://cdn.sqhk.co/napumefu/8jaVjb4/bullet_bike_hd_wallpapers_1080p_download.pdfIn PDF document text
    • https://denupadifujufo.weebly.com/uploads/1/3/0/8/130813478/8929837.pdfIn PDF document text
    • https://cdn.sqhk.co/tovipovo/eCvknx0/loxoramuzexuwax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413369/normal_6014710080bee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485799/normal_6016512c3ccf4.pdfIn PDF document text
    • https://cdn.sqhk.co/lijipatalenu/hcyhjwg/nalufebomi.pdfIn PDF document text
    • https://cdn.sqhk.co/morureju/12yOgiI/flight_simulator_2020_vr_setup.pdfIn PDF document text
    • https://cdn.sqhk.co/murajefovel/heoQhem/72458553553.pdfIn PDF document text
    • https://xabesokexiba.weebly.com/uploads/1/3/4/3/134327988/vekaderugitugakafeg.pdfIn PDF document text
    • https://cdn.sqhk.co/viwiratoposu/gdTghjc/pulse_secure_startup_script.pdfIn PDF document text
    • https://cdn.sqhk.co/nuwobevina/KkOhgd6/9150813154.pdfIn PDF document text
    • https://nubavusixid.weebly.com/uploads/1/3/5/3/135348304/4c8577cd.pdfIn PDF document text
    • https://cdn.sqhk.co/bijozugetav/eTjbFjb/41853350744.pdfIn PDF document text
    • https://cdn.sqhk.co/zotenejek/geg0Lhd/71609192524.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_off0000e757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE757 5412 bytes
SHA-256: b7e05b1aae6ef3d1a9215d0c9d1a1ae5fbcf39497e3d3e68a71ba1dccd951b33
font_01_sfnt_off0000f9ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9CE 10368 bytes
SHA-256: c98a5050bb449b489b62727da705ad367a55425fd2d00a75c451bf4c64425dea

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