Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf785199ad456f2a…

MALICIOUS

PDF

64.6 KB Created: 2021-03-01 14:50:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 24e5f9cac600337c94daa8c507da7c68 SHA-1: 899b2a0559c4ad8716b2bab561b60f764d53b1d7 SHA-256: cf785199ad456f2ad889528e6af73684eccdc01e15645623b6f744dcd365f483
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://nipisod.ru/wix?keyword=kurio+touch+4s+tablet PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4472182/normal_5ff544434924b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453556/normal_60298be94caad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473642/normal_600191d150620.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487906/normal_6026372bd25ce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382966/normal_5fcf6d320b0a4.pdfIn PDF document text
    • http://potuxoposutu.medianewsonline.com/59910554810.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476751/normal_600549eba7a0e.pdfIn PDF document text
    • http://dotekebenutedex.scienceontheweb.net/mukulakudodupil.pdfIn PDF document text
    • http://riwotivadejud.sportsontheweb.net/python_scripting_tutorial_for_beginners.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bimilenalo.rf.gd/fazemetubabapepa.pdfIn PDF document text
    • http://bibujilapewe.epizy.com/reinforcement_worksheet_properties_of_water_answer_key.pdfIn PDF document text
    • http://nejesezape.myartsonline.com/samsung_note_3_price_in_south_africa.pdfIn PDF document text
    • http://valamujunitun.epizy.com/acfta_certificate_of_origin_form_e.pdfIn PDF document text
    • http://wewejozajukenat.rf.gd/6251475998.pdfIn PDF document text
    • http://leligikolapib.epizy.com/barse_song_marathi.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_off0000bfdf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFDF 5084 bytes
SHA-256: 7e706ae43b571164e91e3fff04dac8c237ddfbb7960e0ffe868062b95537cf8f
font_01_sfnt_off0000d130.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD130 10304 bytes
SHA-256: e4458b23d9c31508cfced276865a2da62ad80ad0de2d0380ddbe9ef7aeb2512b