Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d98dee6aaf50f74…

MALICIOUS

PDF

40.3 KB Created: 2020-08-26 04:57:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e24901fb8c926a16f3e2e67fcc20d35d SHA-1: 0d95593d0d4b62c302186bb471538f7bf0587adc SHA-256: 8d98dee6aaf50f7472ab5762c10d21c8ec9960f3e52f84dc6910fa0cc9ef16f4
194 Risk Score

Malware Insights

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

The PDF document was flagged as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic identified a link to a known malicious redirector, and another detected a link farm structure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.link/pify?keyword=pirates+of+the+caribbean+sea+of+wrath', which is also listed as a malicious redirector. The primary purpose appears to be directing users to potentially harmful external 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.link/pify?keyword=pirates+of+the+caribbean+sea+of+wrath In PDF document text
    • http://files.academiadeballetallegro.com/uploads/1/3/1/4/131437308/wakatorudegarugulo.pdfIn PDF document text
    • http://files.stmattsschoolcampbellsport.com/uploads/1/3/1/6/131636946/6277380.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/1/0430/1769/9477/files/fabuzasewibisegole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7281/4245/files/96256235894.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/3496/2088/files/55335746452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3831/7471/files/forrester_report_on_artificial_intelligence.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1396/9819/files/22553286287.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9471/1203/files/caterpillar_diesel_generator_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7298/8071/files/xiperariduleg.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 6

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_off00005fb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FB1 5172 bytes
SHA-256: 0afbe9f2686dca45525083773e336e088c8b473a996794ce88e27bd2d17f8d37
font_01_sfnt_off00007153.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7153 10292 bytes
SHA-256: 3e06ac06c4204971ef9a95c25fc90ee27567fda048a52e81434150c1be3ae7f7

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