Malicious PDF — malware analysis report

Static analysis result for SHA-256 c80839760b9b3ea0…

MALICIOUS

PDF

121.2 KB Created: 2020-08-05 18:28:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e36e4598e6247a25ddb440cafd2d5892 SHA-1: 5c6dfdedd3472b45cec21aae41b8b15c005fdd72 SHA-256: c80839760b9b3ea04d4479fd3cc2cef9493333c9c4e157b12010a5d74b0d7961
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a lure related to 'NCAA basketball rules 2020 pdf' and embeds a link that is flagged as a malicious redirector. This link, https://ttraff.cc/pify?keyword=ncaa+basketball+rules+2020+pdf, is designed to lead the user to malicious infrastructure. The document also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO manipulation tactic to distribute malicious content.

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.cc/pify?keyword=ncaa+basketball+rules+2020+pdf In PDF document text
    • http://files.philjeremypersonaltraining.com/uploads/1/3/1/4/131406114/c5d5983e5c3fe5.pdfIn PDF document text
    • http://files.spintosouza.com/uploads/1/3/1/4/131438248/pumigamezetujiw_pakagiguto_xelobetiku.pdfIn PDF document text
    • http://files.canadianrivervalleyrevenge.com/uploads/1/3/0/8/130814423/8ef86fcaaa83de.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/1/0429/6887/5157/files/nodazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1932/7896/files/biblia_catolica_para_jovenes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6916/1110/files/jugozegewaluro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7857/3464/files/fipijaxafokozezijala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8935/3117/files/68432834515.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/sisuxab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3490/0637/files/xuxafol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9842/3967/files/dutujani.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/0725/9302/files/banking_exam_syllabus_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7620/6235/files/35451393670.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31968244380.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 4

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_off000190fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x190FE 5596 bytes
SHA-256: 05e532284eb7904d055eca0818703d8077717d5c91736e492650b0278bf77c23
font_01_sfnt_off0001a413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A413 16548 bytes
SHA-256: 6bc18d23017bfca921e2e2587002b4ae6ed285672d29fe51f949e74c21fd3adb

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