Malicious PDF — malware analysis report

Static analysis result for SHA-256 8884008f230e47d2…

MALICIOUS

PDF

46.0 KB Created: 2020-07-30 12:57:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 895bfa899280abe6e4baf594d4bfb75f SHA-1: 5ca5825f5c0a86103d2cdbdff56aa5be9f212f24 SHA-256: 8884008f230e47d2857d04f6d2d71d926296afe51898d2c790e16f05dd33842b
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external PDFs, masquerading as a free download for a technical manual. It utilizes a redirector URL, ttraff.ru, which is known to host malicious content. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests an attempt to distribute further malicious content or engage in SEO manipulation for malicious purposes.

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=apqp+manual+4th+edition+pdf+free+download In PDF document text
    • http://files.castlemountaindaycare.com/uploads/1/3/0/8/130814076/rabuzimimajilod_wisexukulajon_dififij.pdfIn PDF document text
    • http://files.anotheroctave.org/uploads/1/3/0/8/130874210/838342.pdfIn PDF document text
    • http://files.scotdancenz.co.nz/uploads/1/3/2/7/132740536/1021111.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/1/0431/4916/4693/files/kozuxifidefokikokaxijof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3031/3122/files/pomoximi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7247/0686/files/vetovota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7238/0310/files/boruteti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0797/5330/files/89478385559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4062/8133/files/wogagedasurowiso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5466/0758/files/81025882864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3179/7668/files/xegofisola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0643/5232/files/27283435621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tadigepulimo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9617/8849/files/xojutafobikujibip.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007766.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7766 5280 bytes
SHA-256: a0929924bbe88b24f24d28b97ae3243783e29b3c8f91cc3ccd840688f59b9eaa
font_01_sfnt_off00008933.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8933 9844 bytes
SHA-256: 2243912bca0538c6bc133bf92ef90cad0dc65ce8ebf1a4aa6da714053b014ad1

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