Malicious PDF — malware analysis report

Static analysis result for SHA-256 73a34624b8c6338c…

MALICIOUS

PDF

48.7 KB Created: 2020-07-28 17:03:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 478574a567e9d8d88830e0cb22d7b6f6 SHA-1: d5d4f3e5feb9e2bbc6ba146c32c8cb6357dd85c0 SHA-256: 73a34624b8c6338cd30d48e3d93727e3bca6041d088576272e0ba1dc7b83a78c
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector infrastructure at 'ttraff.cc'. This redirector is used in conjunction with a lure referencing 'Cincinnati children's hospital clinical practice guidelines' to entice users to click. The presence of a large number of external PDF links suggests an attempt to obscure the final destination 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.cc/pify?keyword=cincinnati+children%2527+s+hospital+clinical+practice+guidelines In PDF document text
    • http://files.peacefulseaproductions.com/uploads/1/3/0/8/130815014/rifezagovexun.pdfIn PDF document text
    • http://files.seanarce.com/uploads/1/3/1/8/131856173/4ddd07eb0429c02.pdfIn PDF document text
    • http://files.tipaldo3cs.com/uploads/1/3/1/8/131856290/637f2aa.pdfIn PDF document text
    • http://files.pdxprays.com/uploads/1/3/1/3/131383018/wikixawasagi.pdfIn PDF document text
    • http://files.jmccarthyphoto.com/uploads/1/3/2/6/132695629/zixewojasuse_rodexagagazus_dafiles_varakajolej.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/1/0439/1786/9211/files/gifosovelafusexavew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1514/2551/files/jivevomexelaresig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/rinutasobaxadobenizam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6590/8136/files/49596621595.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0229/8521/files/56054141022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5757/7122/files/desorakijiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/febimekufelom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2182/0313/files/35428756334.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1986/0125/files/kuzipulijawizaropimuriw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2538/3073/files/777850194.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_off000070b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70B8 5272 bytes
SHA-256: b010e1aab8d12e0414861e625830d24c4307827953936aff5827eda490e138ed
font_01_sfnt_off00008299.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8299 16196 bytes
SHA-256: 6adf643452f477c41ed228f1ef28a95f941a6b78dc70a891980d6b848d668375

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