Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d262b128f2846eb…

MALICIOUS

PDF

68.2 KB Created: 2021-03-03 18:42:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4e9f0c139f06d91f6db1ad66dd0c12a5 SHA-1: 0823f7628fc1b7f394bb705ef0ff36a7c872978e SHA-256: 8d262b128f2846eb7fa038df298e2eb22bf0b260277e20cbb64433d3515afed9
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://xajibur.ru/wix?keyword=ardmore+public+library+tennessee PDF link annotation
    • https://cdn.sqhk.co/noneniwetav/ghGiadW/gamestop_investor_relations_dividend.pdfIn PDF document text
    • http://mufutekuson.getenjoyment.net/87652486134.pdfIn PDF document text
    • https://cdn.sqhk.co/motulobugaji/jaPvaHo/9763589113.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413236/normal_601e81b2547e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474206/normal_602b46f8da216.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443602/normal_6030d8373088d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486356/normal_60129c2dd30f1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424027/normal_5ff0413096cd7.pdfIn PDF document text
    • https://watinamubil.weebly.com/uploads/1/3/0/8/130813586/laxufej-jafisizif.pdfIn PDF document text
    • https://cdn.sqhk.co/janurisu/36icjdi/ice_cream_roll_maker_argos.pdfIn PDF document text
    • https://cdn.sqhk.co/tatidukigag/hfhifgc/49826378988.pdfIn PDF document text
    • https://cdn.sqhk.co/putizimetiwe/uibrAgd/58094722914.pdfIn PDF document text
    • https://cdn.sqhk.co/jumupebuvi/ehcP8gi/photo_editor_online_effects_collage.pdfIn PDF document text
    • https://cdn.sqhk.co/zazifutunoj/ah3oicU/jefinejokab.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
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c069.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC069 5332 bytes
SHA-256: 5b87992d2c16838862b2dd8a0a822e685a8e1b3c4cddc42b8944e69e36a25e10
font_01_sfnt_off0000d260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD260 10376 bytes
SHA-256: adcc20bf81de24bf1cf5fed4a29a857ac75ce2083693d93324051e611ed59c40
font_02_sfnt_off0000f5ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5EF 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361