Malicious PDF — malware analysis report

Static analysis result for SHA-256 59c9ecebc5dbec95…

MALICIOUS

PDF

66.7 KB Created: 2021-02-21 22:15:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 7c787ceef8e6ee1b799a2d6ba0a32c49 SHA-1: 16241ad971730a849877021f675f53303b08e983 SHA-256: 59c9ecebc5dbec958389e5ed872e7ec9a8b97aa4e13298cdc4076c1e0b7a43b8
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://yafferge.ru/123?utm_term=snapper+mower+parts+canada In PDF document text
    • http://opencabinets.xyz/36808356481so8yg.pdfIn PDF document text
    • https://zefowumuf.weebly.com/uploads/1/3/5/3/135327275/6c5a06a2f0.pdfIn PDF document text
    • http://dolinunuridaku.iblogger.org/medical_fitness_certificate_form_kerala.pdfIn PDF document text
    • https://cdn.sqhk.co/duponetix/hjCWjji/kesamusazawenuwazuta.pdfIn PDF document text
    • https://cdn.sqhk.co/tobipamu/ifjjP8v/amc_theatres_near_me_open.pdfIn PDF document text
    • http://refesuf.22web.org/classic_wow_rogue_quest_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/tuwetebep/fITIqJP/pregnancy_week_by_week_belly_progression_triplets.pdfIn PDF document text
    • http://mimasajikataza.iblogger.org/91463450395.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://diwozonez.epizy.com/wojulolelujekujajij.pdfIn PDF document text
    • http://likefiradoweze.rf.gd/aix_en_provence_map.pdfIn PDF document text
    • http://kagiwabiluwotel.epizy.com/canada_post_machineable_mail_guide.pdfIn PDF document text
    • http://kiwasebax.epizy.com/adobe_illustrator_old_version_free.pdfIn PDF document text
    • http://fosadexovoz.epizy.com/pulse_rate_measurement_manual.pdfIn PDF document text
    • http://paluluw.epizy.com/zuribiwisulukezibesurad.pdfIn PDF document text
    • http://difesasud.epizy.com/2431833975.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_off0000c70e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC70E 5384 bytes
SHA-256: 6aa31f8ceae3ac8eb96b9ffcd7b113a82b9743774719ece2adbc0179e8a6ff22
font_01_sfnt_off0000d955.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD955 10864 bytes
SHA-256: b1d5f8202f18b4c7e1584e467b6026ed3e72b7ad766186a625fe2caf358fa70b