Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5f9e42bfe23be32…

MALICIOUS

PDF

46.0 KB Created: 2020-10-08 23:49:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 3b20db3be351db796d79af3cc52bf6c7 SHA-1: 7f27f3cbcdd9940c2d309bbecf74c7fb74d400e7 SHA-256: d5f9e42bfe23be32bff18823c3c6288619a6c8f93d69722edd5ea296d25724fe
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 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.
  • 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://ttraff.club/pify?keyword=tension+setting+ring+reviews In PDF document text
    • http://romod.mrdmagicsite.com/uploads/1/3/1/4/131406809/kupuwubogapubiwot.pdfIn PDF document text
    • http://nexogobo.nancybrophyauthor.com/uploads/1/3/2/6/132695388/6d9de7d2d9297c.pdfIn PDF document text
    • http://midedu.loveaverage.com/uploads/1/3/1/3/131379741/3076213.pdfIn PDF document text
    • http://rogiza.slidelldentist.com/uploads/1/3/0/8/130874474/wizuxebu.pdfIn PDF document text
    • https://site-1036665.mozfiles.com/files/1036665/49639556196.pdfIn PDF document text
    • https://site-1039830.mozfiles.com/files/1039830/68746347183.pdfIn PDF document text
    • https://site-1040003.mozfiles.com/files/1040003/48544507673.pdfIn PDF document text
    • https://site-1036855.mozfiles.com/files/1036855/80227002909.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7135/4533/files/gidef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0412/8164/files/gewijavedusolexuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/0267/1526/files/21163535091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0462/4021/files/rasalojegajazivakosoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4926/0968/files/i_can_ride_my_bike_with_no_handlebars_meme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6870/5954/files/percy_jackson_reyna_fanart.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B2A 4500 bytes
SHA-256: 62eea87f2c9c346682b55cd427b69746a93d6dd2e58fb733030900e8a56793a8
font_01_sfnt_off00007a8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A8E 10148 bytes
SHA-256: 279e4d37947a65a3d9fd19a25ed38fb6b974ce2d567a527ad8d85d329f870869
font_02_sfnt_off00009d49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D49 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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