Malicious PDF — malware analysis report

Static analysis result for SHA-256 c563bad88622377b…

MALICIOUS

PDF

47.1 KB Created: 2020-11-02 21:14:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: ce2b89732d2d8d1a39638efdad1f8270 SHA-1: 13320851db0f1cb9dcaafa7f7df7f3f0f7d6399b SHA-256: c563bad88622377ba5d941855a9a702d801699f6724f2c39579d6f18fe3fd21c
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://cctraff.ru/123?keyword=create+dangerously+sparknotes In PDF document text
    • https://cdn-cms.f-static.net/uploads/4377662/normal_5f8c4208e3bcd.pdfIn PDF document text
    • https://tenanetudoji.weebly.com/uploads/1/3/4/2/134266315/kivuza.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007941.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007941.bin)
    • https://s3.amazonaws.com/voxazedisula/lufexipesegusitezuma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf8d11e6-a9ce-4b19-bd7f-e9965431ad22/ben_10_eye_guy_fanfiction.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55a1c2f4-8285-49e5-bdae-8d7e26fc567f/94034930646.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/pipaposemuwukafudajo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cca652f1-f5ca-4921-85cd-066e593b7757/95713972559.pdfIn PDF document text
    • https://s3.amazonaws.com/jenagubadopi/87894093267.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba9cf468-77eb-42fb-88bb-f927b370340f/pidilobofitimapuwit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c951c51-ba22-4031-9553-193fa2266ec5/rezuxafawuvarowonidon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26ff080d-df08-4a9f-a5c8-a65bb91fafe5/jasenefiloxapekobe.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/memelepupelutagizudoleg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59c2ce37-81b3-452e-b1d7-7c89e10c86ff/diono_radian_3_rxt_manual_canada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b234959-15c1-4e3b-8279-46159495c8f1/regovuzerawafejoliza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87cc8a92-2f0d-4e13-9150-2f93b232305d/jigeluwokovujatekiseji.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 extracted file (font_00_sfnt_off00007941.bin)

Related samples 3

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007941.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7941 5200 bytes
SHA-256: 780ccfb50d59a551827e7a70d773acfd1931aa5e801e262b711d9337f2e0df95
font_01_sfnt_off00008b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B04 10820 bytes
SHA-256: 987d30a2934ea0149f0ba68a248eb9585bf81d328bb3ac7136bd71e31fabe1b4

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