Malicious PDF — malware analysis report

Static analysis result for SHA-256 17e4b651d1253b07…

MALICIOUS

PDF

41.6 KB Created: 2020-08-03 20:52:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1d993ed103d9429461fdb0859d5a9ab0 SHA-1: 17aa85510ca33df1659e8dff61ce1da2b5285e6c SHA-256: 17e4b651d1253b07abd8654249a7cc9e7c4c93f982461bcf96ed1026dec117c6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL and appears to be a lure for free downloads, likely leading to phishing or malware. The ML classifier strongly supports the malicious nature of this PDF.

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=enumeration+of+microorganisms+pdf In PDF document text
    • http://files.drakecreekkennels.com/uploads/1/3/1/3/131378852/mopiz.pdfIn PDF document text
    • http://files.nickiburnett.co.uk/uploads/1/3/0/8/130874250/kabutaloz.pdfIn PDF document text
    • http://files.simplymeganv.com/uploads/1/3/0/8/130873840/a45f0bd5b.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/1/0434/0088/8483/files/gozapiliselobutusomon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9125/5713/files/82041141354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8631/5682/files/badomoxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5733/9807/files/gexurirepegejokawodawamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4449/4760/files/57697595541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5359/6310/files/72874673692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mutim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2494/9153/files/jakavulefovajaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1419/3311/files/darifozojo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0219/1269/files/64319910292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6314/8706/files/xavufuvopasujetegugevo.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_off00006523.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6523 5400 bytes
SHA-256: bb28693537e356c39e8170a59492fb1dd243f40e5fdfa99f4e8e6e626372e565
font_01_sfnt_off00007770.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7770 10168 bytes
SHA-256: 57f6796dc1dae6e4c82fc8172c19f8caf210b8932d3ee174dca20dfdd065fe8b

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