Malicious PDF — malware analysis report

Static analysis result for SHA-256 86d5d406f2bf8473…

MALICIOUS

PDF

52.2 KB Created: 2020-07-29 02:53:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 320ba6f401f66dbaf32d7138ab759171 SHA-1: 645eca54641c104b1de80c44ee5fe1f30bd194f8 SHA-256: 86d5d406f2bf8473cc9c5811bde8e34e011d682074d243b888f9a758d0110ae3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a high number of embedded links, many pointing to a redirector service (ttraff.com), suggesting a link farm or phishing lure. The document body, though heavily obfuscated, contains metadata indicating it was generated by wkhtmltopdf, and the heuristics confirm the presence of malicious redirector links and a link farm. The primary malicious IOC is the ttraff.com redirector URL.

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=appendix+psychology+report In PDF document text
    • http://files.andyfowlie.com/uploads/1/3/2/7/132740533/vitozuzezigu.pdfIn PDF document text
    • http://files.thirdcinemaproductions.com/uploads/1/3/1/3/131379749/sonazez.pdfIn PDF document text
    • http://files.myhappyplacekennelandexotics.com/uploads/1/3/0/7/130739343/kisozijapupimep_tegoxasijavim.pdfIn PDF document text
    • http://files.sneakersmeetheels.com/uploads/1/3/1/3/131380440/f84bdb.pdfIn PDF document text
    • http://files.kamraton.org/uploads/1/3/2/6/132682607/5860064.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/1/0434/5479/1846/files/83556221808.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4717/4812/files/napawawol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0772/0094/files/zasukimebisekemivipirovov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6930/1151/files/81248233704.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3134/7868/files/rumikoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6402/5493/files/daluzubona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9812/8036/files/64138071925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6042/8962/files/rojogudanuwapodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6560/6301/files/zububumarufovuxopaxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4172/6370/files/wofobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1917/9931/files/fizad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/20002428182.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_off00008f63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F63 5072 bytes
SHA-256: 9164f7cc4098731e17ab4adaa75ce656c52d67b1ba357bf80f1fc33c02d5da51
font_01_sfnt_off0000a0a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0A2 10192 bytes
SHA-256: b4b8eeddb55707ae51ae71190d161dfeea36cdaaba143ba932628a36ed1164f2

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