Malicious PDF — malware analysis report

Static analysis result for SHA-256 0440ddbfac255bd5…

MALICIOUS

PDF

38.3 KB Created: 2020-08-12 22:47:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 00a3beb10dccb0b62b6b6834c0b983fd SHA-1: 9ebea82a4524586ed7ba25a1c01d15f4a82d9590 SHA-256: 0440ddbfac255bd562aa56827fdf51140a7114a50b742a858f06b330a1ca3ed8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified as a redirector at 'https://ttraff.ru/pify?keyword=kenwood+smoothie+maker+recipe+book+pdf'. This tactic is often used for phishing or distributing further malware. The ML classifier strongly indicated maliciousness, and the presence of numerous external links points to an SEO poisoning or link farm 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.ru/pify?keyword=kenwood+smoothie+maker+recipe+book+pdf In PDF document text
    • http://files.herbkauderer.com/uploads/1/3/1/4/131437402/9368229.pdfIn PDF document text
    • http://files.verdant-table.net/uploads/1/3/0/7/130775126/vitewe.pdfIn PDF document text
    • http://files.workofheartfacepainting.com/uploads/1/3/2/6/132681452/2402484.pdfIn PDF document text
    • http://files.bitsnpieces.ca/uploads/1/3/1/0/131069893/vageduzupalapur_zobawaporiwif_digojibolu_zabixaponega.pdfIn PDF document text
    • http://files.littleatelieryc.com/uploads/1/3/1/6/131637362/zavovimizakawukovik.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/1/0428/4976/3487/files/alejandra_kamiya_cuentos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9850/3336/files/67462695794.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6289/3471/files/sewilejikawumapasijilud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7298/8071/files/wedafaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6472/1562/files/47800285127.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1319/2349/files/vunafunatexijaligupawew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3383/7224/files/85613450916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1824/8601/files/lesonaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7415/0809/files/19347124789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8331/7926/files/47445901021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2960/2205/files/bifuxuradakusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2218/6656/files/tizatobozosaduf.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_off0000559f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x559F 5628 bytes
SHA-256: 335f7eb2f4cfb4f0e12c935bf569577ed676c320dcabdc77fc486d0c255bf747
font_01_sfnt_off000068a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68A8 10592 bytes
SHA-256: a4b35bcef9f53121cf4cf794d2589ad8ed7509f1246921ca8ea1e308de4b6363

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