Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b8e23be91bb7d69…

MALICIOUS

PDF

44.5 KB Created: 2020-09-04 22:08:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cf5d5bdbb36ac75661d564a299f029d0 SHA-1: 4a8cb17395dbcdc404228c2e90bc2125bdcddfd8 SHA-256: 0b8e23be91bb7d6906b420bdf541777f2b85a265a233f1c2563a87b3f0e7fbbf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a link farm and a redirector URL, masquerading as a printable schedule to entice users to click. The primary malicious URL identified is https://ttraff.me/wix?keyword=dallas+cowboys+printable+schedule+2018+pdf, which likely leads to a phishing or malware distribution site. The ML classifier strongly indicated maliciousness, and multiple heuristics confirm the presence of malicious redirector 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.me/wix?keyword=dallas+cowboys+printable+schedule+2018+pdf In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/90423f_87efc59e32ed42c493caf8ac2ddd500e.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9f69bd_8d0d552e0c6b47f689780290aff55575.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/2f3ac6_d25eb68ea7d8471b849bd6bd79ce90a5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tagitigupi.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/912de2_828ce471f52d4cdf9a80e589f34ac79c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/69695d_4d48e88d37a643bbbe2eb2e96755ad00.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f0b6b3_1f82107c62c94d9da894d0cef4dc841c.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/8716ab_28ac7724de79477d929bfb487df412c9.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/74e905_469fa8093dc4401ca97aaae9d9c95cb1.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/f6a907_e2a1e463fd9a40ee98663533c78fb11a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/4dd980_0f2b21ccc75c4310a08b9e2c4d7a436b.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 5

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_off00005891.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5891 6096 bytes
SHA-256: 7a83abba6b65f83405812bf4b21135e710566aeb721ce855dd6c00518d43f92c
font_01_sfnt_off00006d5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D5B 2268 bytes
SHA-256: ad6b7d89c5fa709855afe00301495b63a95e2ac7f715e2abd2fcaf396ca2e5f3
font_02_sfnt_off000077bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77BB 14688 bytes
SHA-256: 2151f01f70a75c71948cdb8677334d279b2f069e2e31a593d84a3d415449a745

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