Malicious PDF — malware analysis report

Static analysis result for SHA-256 09b37fbeaf306639…

MALICIOUS

PDF

40.5 KB Created: 2020-08-18 22:16:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 80e5cc4c4d0715f13e95543b28842d5d SHA-1: beaa6be7c83cb0d2477ec0e61b5d6ca3bc6b34df SHA-256: 09b37fbeaf306639260fede15b0d466652041d429c0ac423b98963e58135e7d8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) identified as malicious. The document body and heuristics indicate a link farm strategy, likely to phish for user credentials or deliver further malware. The ML classifier strongly supports the malicious nature of this PDF.

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=yellow+rose+of+texas+sheet+music+free In PDF document text
    • http://files.samanthanathey.com/uploads/1/3/1/8/131856173/8277457.pdfIn PDF document text
    • http://files.metrodetroitmun.org/uploads/1/3/1/3/131384281/239654.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/1/0433/4911/5029/files/5237950427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1666/7815/files/phd_thesis_powerpoint_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6265/6152/files/26177852820.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6580/2903/files/ropugubajofolotuzeximom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9802/1793/files/agricultural_science_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7813/1611/files/72186864023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9443/4202/files/35786450438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6795/5610/files/tukexoxebesede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/java_graphics_programming_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5939/4213/files/tixujilajasojafemabewafev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/54313135065.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 1

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_off00005fa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA6 5244 bytes
SHA-256: e58a5c2b1be2e82b865725e1f726c199ef4d934eed5b7bc41d7f76b995e20cfa
font_01_sfnt_off0000716d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x716D 10504 bytes
SHA-256: ca928ba1f15da0152eac06da4c0484930a9fe10dcb1d955fa00c198cf60a55a5

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