Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e36ff8f8a782336…

MALICIOUS

PDF

60.7 KB Created: 2020-08-10 03:42:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4117da361685d8648d4da09146aabbb8 SHA-1: fddbf9208f19f73970d3ae705b598229cff25b60 SHA-256: 7e36ff8f8a782336af6fd07b2bb82a6a1593077cb63c31e482214eeb00d559e4
194 Risk Score

Malware Insights

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

The PDF contains numerous links to an SEO redirector, specifically `https://ttraff.ru/pify?keyword=types+of+biotic+interactions+pdf`, which is flagged as malicious. This indicates a phishing or scam attempt, likely using the guise of a document download to redirect users to harmful content. The ML classifier strongly supports the malicious verdict.

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=types+of+biotic+interactions+pdf In PDF document text
    • http://files.terryrich.co.uk/uploads/1/3/0/8/130874030/nolorux.pdfIn PDF document text
    • http://files.guidancebylori.org/uploads/1/3/1/6/131637109/figapuxubik.pdfIn PDF document text
    • http://files.francesandkevin2019.org/uploads/1/3/0/7/130740521/gopidomuva.pdfIn PDF document text
    • http://files.lisaglauer.com/uploads/1/3/0/7/130739052/1269297.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/1/0440/1335/5166/files/72229830177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2201/4870/files/el_almohadon_de_plumas_y_otros_cuentos_horacio_quiroga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9888/9635/files/rexil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/8423/9268/files/acres_of_diamond_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3701/5719/files/houghton_mifflin_math_grade_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1708/2792/files/45507032245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5804/3797/files/webmd_portion_size_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8897/7813/files/45370963548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8590/5576/files/baluniruwekasoraw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5195/8947/files/git_get_all_branches.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3149/3784/files/ganegabikugube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/1144/4634/files/fish_names_and_pictures.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_off0000ae9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE9D 5308 bytes
SHA-256: 9642db547918526f60fda1de2db4654ec19d528b6f9987021ba9b3054085d7f8
font_01_sfnt_off0000c0bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0BF 11412 bytes
SHA-256: d36f724612a92dfc6ec89af4a91d4e6e80232c0052e7598748102568858f770a

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