Malicious PDF — malware analysis report

Static analysis result for SHA-256 18ed5e5f1fc6c432…

MALICIOUS

PDF

120.9 KB Created: 2020-07-31 01:04:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d82e6db0b8ce3ae4fd13b69c7fa61354 SHA-1: b00529f393cbffaf31fc78da9de8381a77cd6b02 SHA-256: 18ed5e5f1fc6c432b9de0e5fd4273ea7f9815260fa85f12ec46289c488766fcd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links and a link farm designed for SEO manipulation, likely for phishing or malware distribution. The primary redirector URL, ttraff.com, is flagged as malicious. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs.

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.com/pify?keyword=history+of+fortran+programming+language+pdf In PDF document text
    • http://files.ascotdance.co.uk/uploads/1/3/1/8/131871864/ravojomewiwojun.pdfIn PDF document text
    • http://files.nhage.org/uploads/1/3/2/3/132303322/04859f66217bb9.pdfIn PDF document text
    • http://files.goodfilmhunting.co.uk/uploads/1/3/0/9/130969204/a1ad4017cc00.pdfIn PDF document text
    • http://files.faithkingwriter.com/uploads/1/3/2/8/132814071/fisedarusabema_dotuxugubowez_pitixop.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/1/0429/6628/6490/files/vikowikipowimupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7663/9134/files/10483039751.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9432/6939/files/48997192262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3956/1630/files/levijigeror.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3861/3415/files/44346104550.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6119/8491/files/58514576748.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2503/8498/files/bodogexisedepezunazaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5306/2043/files/52341720724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1787/1266/files/32712912109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pujofupokutesigitugut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0883/5234/files/2932419031.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4519/9784/files/zawosovusuziwiruwunile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rirolor.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_off0001981c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1981C 5304 bytes
SHA-256: 087a09bf7818d922cd0f5c40cf650459997e49d68f9b553e8dafd0c329e4f00e
font_01_sfnt_off0001aa0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AA0F 13440 bytes
SHA-256: 3dfaec6c866e2f7f9fe350817e4a891162f22f7a2cc2c968d247734f186dcf29

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