Malicious PDF — malware analysis report

Static analysis result for SHA-256 0926a2446cee11cc…

MALICIOUS

PDF

70.1 KB Created: 2021-02-27 01:09:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 88111dcbd0eb2636749db01cb38df663 SHA-1: af738454c2fc7b58c69a0cc4df22b3e08703401f SHA-256: 0926a2446cee11cc5b1b37c45b7cadb7db27f2d8acdcda018c14cb68554a9453
196 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
  • 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.
  • 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://jacksth.ru/award?keyword=volkswagen+service+schedule+australia PDF link annotation
    • https://cdn.sqhk.co/rokabumake/cihgjT7/roald_animal_crossing_new_horizons_popularity.pdfIn PDF document text
    • https://cdn.sqhk.co/guwaloxipete/eSieH3N/12666110393.pdfIn PDF document text
    • https://butijewib.weebly.com/uploads/1/3/4/8/134886415/masivuzabaxujowu.pdfIn PDF document text
    • https://cdn.sqhk.co/kapideto/bhihbig/wwe_news_undertaker_raw.pdfIn PDF document text
    • https://jumuwaxenu.weebly.com/uploads/1/3/1/4/131406560/5813158.pdfIn PDF document text
    • https://cdn.sqhk.co/xaselavub/ayGlzja/51541458787.pdfIn PDF document text
    • https://jenazikefu.weebly.com/uploads/1/3/4/0/134017187/3731024.pdfIn PDF document text
    • https://sanokigoj.weebly.com/uploads/1/3/4/8/134863934/mebugaroteka-jetenejire.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474457/normal_602f117223a0c.pdfIn PDF document text
    • https://zunitilamurako.weebly.com/uploads/1/3/4/5/134529552/7313631.pdfIn PDF document text
    • https://wefupavoxed.weebly.com/uploads/1/3/2/6/132682659/1dcde.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453342/normal_5ffdc3a899494.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/fifuto/kikuweve.pdfIn PDF document text
    • https://s3.amazonaws.com/taturi/29813320747.pdfIn PDF document text
    • https://s3.amazonaws.com/supefujoxopubu/list_of_comparative_and_superlative_adjectives_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/fujixufoz.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/midalexefejufamiga.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/congenital_diaphragmatic_hernia_management_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/bubisifapagefe/guwawofowuruxovodi.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_off0000d79d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD79D 5380 bytes
SHA-256: cedf1e8eb38b8312c42aa55fc247b49dae38607cf3db7f74ffd9cba2f3b06915
font_01_sfnt_off0000e9fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9FC 9708 bytes
SHA-256: 0ca3d98f3452622a006a92b7aee29df05b1c14fb9241a660518e24dac3d6ae76