Malicious PDF — malware analysis report

Static analysis result for SHA-256 11d619effce2cc12…

MALICIOUS

PDF

31.7 KB Created: 2020-08-14 18:44:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2e509329e8507b083b16c496e51e8d90 SHA-1: 3a690fa7b644dce759bb17230faae78a6e816d5e SHA-256: 11d619effce2cc121bf5880bf4685dcaed6e5b3d6a5c89f65d8370c74e53aac9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to redirector infrastructure like 'ttraff.com', suggesting a phishing or ad fraud scheme. The document body, though heavily obfuscated, contains the same search query as the redirector URL, reinforcing the lure. The ML classifier strongly indicated maliciousness, and the presence of multiple external links points towards a link farm or redirection attack.

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=deep+fitted+sheets+king+size+next In PDF document text
    • http://files.gretashaven.com/uploads/1/3/2/7/132740670/sutuke-fimaxokape-baxuxupelowoj.pdfIn PDF document text
    • http://repilomux.ezexs.com/uploads/1/3/0/7/130739072/pajutat_fuwoxusupum_firoj.pdfIn PDF document text
    • http://files.tinaspicks.com/uploads/1/3/0/7/130738568/d6e09.pdfIn PDF document text
    • http://files.stfrancismf.org/uploads/1/3/2/8/132815748/bokak.pdfIn PDF document text
    • http://bebiroka.qksnd.com/uploads/1/3/1/1/131164250/3253706.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/1/0432/2482/6014/files/83137306708.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vuxopikuxoxixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0776/1819/files/wifevudiwixumof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7727/1716/files/wupejinapufedar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zijuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78549170372.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1727/9400/files/wuzafejaponegegifoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lagikemirulufuwetore.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 4

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_off00004367.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4367 5144 bytes
SHA-256: dc91a4effd5047f53316df727519c123eb1b31c22f49560b4e9ec18bc90c64e5
font_01_sfnt_off000054fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54FB 8564 bytes
SHA-256: 9aae90f83d45e9cc3193556edd909a1edf9b11d309c1f08822b06b7a188ebb14

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