Malicious PDF — malware analysis report

Static analysis result for SHA-256 5290a5a3a85b33d4…

MALICIOUS

PDF

43.6 KB Created: 2020-09-01 20:20:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d933d77927ac59be93090ccae1c15e28 SHA-1: fa1b130efae117c88936816f464c3b227bf3f55d SHA-256: 5290a5a3a85b33d413fb779ea50bc6dd5a2e7147b57356751816e22bf7a92c73
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.me/wix?keyword=a+href+full+form+in+html', is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness. The primary purpose appears to be SEO manipulation or user redirection through a large number of 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=a+href+full+form+in+html 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/b8c837_20e9b76d67f040d0ae4bcbbd3b4ace65.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/7a11b0_87e435134de4489e86022697ea7a7ab6.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/ac51ce_b0717863fa3745a39e1fe2031612467a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_d2fc01be6ca84681814b5d766f228403.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_8de2c3f5a3e14d688bca221f8f91ed6d.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/82e28d_c34d3d1726684a76bbdd6a6504ee1104.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_fa1f752720434b9f9ac4a1fb941376a8.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/1d64af_378f54f197784cada7f9d9ba43f5deef.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/19ce5d_2fac15ee8f6c4d4895b42b0f45539d9b.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/50de67_d3e8f809332d4c64b77fc7d24676d429.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7148/0742/files/exercicios_de_geometria_angulos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5354/5632/files/ribol.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_3ad9e121e30941b399d137c18de57ba9.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/0789d5_7852368d108f4685a0bf49ee0bdfbd75.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/fe83c3_2db47d107bf14a81bad62bc7628a6c94.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 6

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_off000051fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51FA 4608 bytes
SHA-256: d275713ed7a11531961f1a3e6904b76afcbfe91538fbabf5f9fe54b89869ba59
font_01_sfnt_off0000617a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x617A 13372 bytes
SHA-256: f7c3b1fe39af746cc7e178e16bcf7338f4cf951831bb9d73d709bf31cdc6d634
font_02_sfnt_off00008ca7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CA7 16076 bytes
SHA-256: b12fd7abebef46c6af06114fd52e3a226bf6873093cd64b6bfea0858fd0ebc42

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