Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0cb11421231c4c6…

MALICIOUS

PDF

38.2 KB Created: 2020-10-19 10:52:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-02
MD5: 81491b7b42341f2565a4a3273dbd9383 SHA-1: d66ff8ee1c328b448c4100ae23b59d515612037c SHA-256: c0cb11421231c4c6559e6ae8f18f412c41ee1db04e8976c0ef2ad6cbab72b8d6
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://gettraff.ru/wb?keyword=pantum%202502w%20driver In PDF document text
    • https://gujodoludota.weebly.com/uploads/1/3/2/6/132681740/sosipedegekike.pdfIn PDF document text
    • https://bizumoku.weebly.com/uploads/1/3/2/6/132681494/f168c8638.pdfIn PDF document text
    • https://dokakida.weebly.com/uploads/1/3/1/3/131380589/wuvob_kosilo_gupip.pdfIn PDF document text
    • https://milavigik.weebly.com/uploads/1/3/2/8/132815866/9164513.pdfIn PDF document text
    • https://jikeberu.weebly.com/uploads/1/3/1/8/131857846/8346337.pdfIn PDF document text
    • https://dudikojegak.weebly.com/uploads/1/3/1/4/131406444/lagewofuvugobuniz.pdfIn PDF document text
    • https://bubixoduxufito.weebly.com/uploads/1/3/1/0/131070588/wirotunujafu-topazitawivava.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00004b0e.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00004b0e.bin)
    • https://cdn.shopify.com/s/files/1/0502/2439/8528/files/30518247771.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/daad4454-f5da-47a0-82e5-a0ade7b1dced/feberas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88475d92-2ec7-492b-b6da-30587d37955e/jibewikapi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0890/0768/files/forumias_prelims_test_series_2020_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/8650/1806/files/5_minute_rule_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8907/5102/files/monroe_county_missouri_historical_society.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6938/2568/files/holt_literature_and_language_arts_fourth_course_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0567/6192/files/guatemala_schools_system.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0805/5720/files/79854549999.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_off00004b0e.bin)

Related samples 6

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_off00004b0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B0E 5312 bytes
SHA-256: aabc8469a11835df62dbdfb4f4ef4cb994aafc943a39599d3372fea5dbb5c5e2
font_01_sfnt_off00005d14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D14 2052 bytes
SHA-256: 953da2a52d47a7511df70ac9e2bfa27c9b2c9c83997a120c944c1cdce221ad8c
font_02_sfnt_off000065c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65C7 11876 bytes
SHA-256: 5048fb22e8e33fd8920edd6ba73289bc5a3f55bae34ec6391f71eac5b10bce1a

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