Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3c407f02fd83768…

MALICIOUS

PDF

69.1 KB Created: 2021-03-05 16:53:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e35435ba780f8b83e47f187158b334be SHA-1: 048f4e780778153e4c94fcbd6b39accdc8478135 SHA-256: c3c407f02fd83768dbfe115854cf29ba2e0380c0d1d31645a29e9babba5ab7aa
136 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
  • 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://dugedepap.ru/aws?utm_term=home+network+setup+windows+7 PDF link annotation
    • http://noxitafevinuv.22web.org/41334737879.pdfIn PDF document text
    • https://cdn.sqhk.co/pugijuzo/hginOje/chicken_invaders_2_christmas_edition.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403805/normal_603e7fc674e2d.pdfIn PDF document text
    • https://cdn.sqhk.co/tezizejaropu/eahhhhQ/70073018587.pdfIn PDF document text
    • https://cdn.sqhk.co/nonuripot/YSjbicV/xatiwipiw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417531/normal_602a3caca47f0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xeroguru/code_black_episode_guide_season_3.pdfIn PDF document text
    • https://s3.amazonaws.com/gasodamuza/91756332131.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/my_talking_angela_old_version_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/kijelopazekune/35501562354.pdfIn PDF document text
    • http://nozozuwovore.atwebpages.com/senior_graphic_designer_salary_toronto.pdfIn PDF document text
    • http://gosaduzunake.myartsonline.com/xunovugizutimek.pdfIn PDF document text
    • http://lofadezowudekeg.epizy.com/neuralgia_trigeminal_adalah.pdfIn PDF document text
    • http://zaximibirada.epizy.com/kendo_grid_custom_group_footer_template.pdfIn PDF document text
    • https://s3.amazonaws.com/liwara/molenejajosobokomemuka.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_off0000d364.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD364 5060 bytes
SHA-256: 1b28346789a96de47feba727b7f6d40827e58a019d257fb196121d34a5f41998
font_01_sfnt_off0000e49d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE49D 10456 bytes
SHA-256: c0edf833d354c68cf10c6d831a55ff17a0f2bcfa3ea6c0aca3c2819448d74d7f