Malicious PDF — malware analysis report

Static analysis result for SHA-256 403e883300d0545b…

MALICIOUS

PDF

40.3 KB Created: 2020-08-28 01:28:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6f520f28108d58616758a11870ac47ad SHA-1: b4c2b68430ae3ab14af8bae224cb4ba2bf883849 SHA-256: 403e883300d0545b02322e41a01f22296fdaabfa345b954be4d59a0aadb834ef
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=how+many+chapters+are+in+borderlands+3'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous links to other PDF files, many hosted on Shopify. The document body contains the question 'How many chapters are in borderlands 3', likely a lure to engage the user with the malicious links.

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.ru/pify?keyword=how+many+chapters+are+in+borderlands+3 In PDF document text
    • http://xumivelob.cheerycards.com/uploads/1/3/1/4/131483152/26ee7454e2ed4.pdfIn PDF document text
    • http://files.willowfree.ca/uploads/1/3/0/7/130740344/xiwodufa.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/1/0433/0687/7080/files/jakenetukuzalavat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1302/0570/files/68127603633.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7025/9357/files/74137514323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7351/9272/files/jenepegolemonomulelozan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5495/6695/files/26732292950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9111/6700/files/43874955352.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/worksheets_for_kindergarten_pattern_writing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9883/8942/files/pogibanedowunipegar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0881/9349/files/64190591279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6229/5714/files/butil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2099/9066/files/91011591799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/2490/8193/files/asus_vn248q_p_review.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 8

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_off00005db5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB5 5772 bytes
SHA-256: 247f8e9c61c7e620b90839f4a7d854a3c4ab90ebce4c2c509afe5f466daad273
font_01_sfnt_off0000712f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x712F 10336 bytes
SHA-256: 62246453bf96638ab76e8b3111129feefcc643fa4155d3572616f294cf3dc43e

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