Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b3325aa5400a577…

MALICIOUS

PDF

35.4 KB Created: 2020-08-17 18:29:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 14ac7e569322196c55f8fd9fa723f5e5 SHA-1: e2fe284e7bceb87ce1325c33df64329fd7b603e6 SHA-256: 9b3325aa5400a57729b7e32fcaa189f037404793c6da91acf7c586bc37ae5a8d
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on Shopify and other domains. One of these links directs to a known malicious redirector, ttraff.ru. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm with a malicious redirector indicates a likely attempt to lead users to harmful content or further stages of an attack. No scripts were extracted from this sample.

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=catholic+counter+reformation+worksheet In PDF document text
    • http://files.schoolofswedishfish.com/uploads/1/3/1/3/131379833/bd833.pdfIn PDF document text
    • http://vepilegu.manuelaferretti.ch/uploads/1/3/1/8/131857818/7847487.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/1/0428/5267/9836/files/pusunuzesalok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1871/4264/files/57642161724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7808/0919/files/peritoneal_dialysis_procedure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1262/6344/files/fifimuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5990/2624/files/38464270995.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4072/7463/files/69902473885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6978/3720/files/48826320601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3676/0485/files/dunuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5548/0981/files/rufenozonemiturojuxabexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6045/3791/files/bavus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/4012/3552/files/working_with_functional_grammar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6783/4517/files/63653275871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2661/2378/files/libros_sobre_administracion_publica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5769/3347/files/zebiwugifenedizowowixebo.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 1

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_off00004d7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D7B 5180 bytes
SHA-256: 68e627d53f834433352f8cb641847f4c9883362a3cd6256d8f5e6ae1df2c515f
font_01_sfnt_off00005efa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFA 9872 bytes
SHA-256: 7d1338124c7c28bc1db77b91a6b4f0a8eecb66ebd2413d243bc01efe847e0fae

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