Malicious PDF — malware analysis report

Static analysis result for SHA-256 1659911dc0ddb7ba…

MALICIOUS

PDF

43.5 KB Created: 2020-07-30 18:42:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 63825f674a5c13a807866951df3bc275 SHA-1: ccb6bb5662ca349300e11365a229e2d54c4f963c SHA-256: 1659911dc0ddb7ba24a23b71f96cd52ca2cabd59b982e17a7328eb26b84ae516
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to create an SEO link farm, directing users through a malicious redirector at 'ttraff.com'. This pattern is commonly used to obscure the final malicious destination, likely a phishing page or a site distributing malware. The ML classifier strongly indicated maliciousness, and the presence of redirector links reinforces this assessment.

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=mylar+capacitor+codes+pdf In PDF document text
    • http://files.phsbusiness.com/uploads/1/3/1/6/131637081/ee25e0f60e3c7.pdfIn PDF document text
    • http://files.brennathompsonrd.com/uploads/1/3/0/7/130775868/19742053.pdfIn PDF document text
    • http://files.annualreport-m2016.com/uploads/1/3/2/6/132696018/misipasefirefazorude.pdfIn PDF document text
    • http://files.harmonizeyourspace.com/uploads/1/3/2/3/132302913/6922088.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/1/0431/9969/2958/files/linogiwul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5007/4269/files/kegowasovoxope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/rowatewikipunodebuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6879/2732/files/dajamovurewibazezakamibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8488/1825/files/mufixipofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/91224367941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0115/9575/files/tidedorapatesulod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1972/1115/files/45232704135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6647/4139/files/wopotajakox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7558/2617/files/35335338740.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4993/4231/files/48721481974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0949/8536/files/pipojugiwemurikewe.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_off00006fe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE2 4940 bytes
SHA-256: b3f2575c673a79fbbceb08fc67e57ba53b35ecf498b31f5aad075457ea11a392
font_01_sfnt_off000080c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80C3 9388 bytes
SHA-256: cf7c5444772775eaa921b99139dc4529430a55305d3aae6bc354bfd8ebb6a66b

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