Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f5217181a7a11c2…

MALICIOUS

PDF

52.3 KB Created: 2020-08-08 12:53:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 181a37b757424b66b1ba5f87702fa1eb SHA-1: 27d586d9a7afc6ed96b7f547c918168e81db7fb9 SHA-256: 7f5217181a7a11c24b9c55f9dab09ebef2ed8a8c9ffc902979382a3a9fb66119
194 Risk Score

Malware Insights

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

This PDF document was identified as malicious by a machine learning classifier and contains multiple heuristics indicating malicious intent. It embeds a large number of links, many of which point to a redirector service (ttraff.com) that is associated with malicious activity. The document body, though heavily obfuscated, contains the URL https://ttraff.com/pify?keyword=hematology+test+normal+range+pdf, suggesting a lure to disguise malicious redirection. The presence of numerous PDF links and a redirector URL indicates a likely attempt to funnel users to a malicious site for phishing or malware distribution.

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=hematology+test+normal+range+pdf In PDF document text
    • http://files.aminmohamed.com/uploads/1/3/2/3/132303286/60baf66c24.pdfIn PDF document text
    • http://files.valleycatsbengals.com/uploads/1/3/1/4/131453252/zawono-sifek-tumove.pdfIn PDF document text
    • http://files.marineflvs.net/uploads/1/3/1/4/131406843/4826989.pdfIn PDF document text
    • http://files.pencilartistbobbygoldsmith.com/uploads/1/3/1/4/131453276/bomoj.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/1/0432/0611/5488/files/zufivikelonug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1687/1333/files/94976533017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/derupoderumujokakarijuli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8627/4977/files/perapef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9186/8310/files/25404209546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5173/7498/files/horrible_histories_angry_aztecs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3150/9664/files/40708288038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4246/4166/files/wuniziruwak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2833/3219/files/pifodugepopimapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2133/4688/files/giwegunotalil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67331216746.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6473/7438/files/23535749860.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 7

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_off0000817d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x817D 5424 bytes
SHA-256: 9eedf8f746c14628062624c39514d54d367227a4b30af1a9ef80592811f761f3
font_01_sfnt_off000093e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93E0 15460 bytes
SHA-256: 3b101b97e78e7aebf51fce423c4dc036aee3857ff964443db71c06d9892c9473

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