Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e2a2f1bc4055df9…

MALICIOUS

PDF

47.1 KB Created: 2020-10-07 12:30:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 06247f8ca874dd4c621e13a767c14652 SHA-1: f067e0236f509948a74744d8afae14c5a2f7f6a1 SHA-256: 6e2a2f1bc4055df95560c78fbaaf37760a1c5c1da9e02e53eee86db2c570e4cf
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/strik?keyword=evaluation+napoleon+cm1 In PDF document text
    • http://files.jasonktallon.com/uploads/1/3/1/4/131453451/648a01b2cdd.pdfIn PDF document text
    • http://files.woodenitbenice4u.com/uploads/1/3/0/8/130813796/xifutifavetap.pdfIn PDF document text
    • http://xeneradun.oneearth-onevoice.org/uploads/1/3/1/4/131406837/neliledaduxat-fixub-zefoxivoxot-gitizuzadej.pdfIn PDF document text
    • http://files.squarecanvasart.com/uploads/1/3/1/4/131408738/miraxedulora.pdfIn PDF document text
    • https://site-1039676.mozfiles.com/files/1039676/duresi.pdfIn PDF document text
    • https://site-1042452.mozfiles.com/files/1042452/mekexopabiwux.pdfIn PDF document text
    • https://site-1037111.mozfiles.com/files/1037111/62334195542.pdfIn PDF document text
    • https://site-1036868.mozfiles.com/files/1036868/18970102723.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8829/7630/files/complex_inheritance_patterns_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2646/7992/files/21664274402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3297/5272/files/zafirusilakurefulek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6024/3879/files/riddle_school_2_unblocked_games.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5172/9567/files/nih_fellowship_cover_letter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5940/4191/files/refusuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7539/0625/files/john_fogerty_change_in_the_weather.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6450/6006/files/vabote.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off000064c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64C3 4872 bytes
SHA-256: 1be76377bb7ed4ea1c7299ff08ccf30b5eec3cef257bbee4b103c10a5f91e3b9
font_01_sfnt_off00007558.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7558 10504 bytes
SHA-256: dca8b64af9949d499200c2313fb76186a5404d569218d3c3da8b20969c87f61f
font_02_sfnt_off00009938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9938 16312 bytes
SHA-256: bf8f9ece8d9d74ce2d7a98a07ee1bb8f4056faf702b3b1702118181e85f1b939

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