Malicious PDF — malware analysis report

Static analysis result for SHA-256 605167cd5efbe667…

MALICIOUS

PDF

42.2 KB Created: 2020-08-13 22:21:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1185cac8f9b7f3a15f2905fed25fe5c6 SHA-1: 227a4ffbeb7a1bd0d75b33e86e019c50c0c818d8 SHA-256: 605167cd5efbe6675b14f715fbec3238844edec9ceca06fb12a1867ffe5261d0
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a redirector service (`ttraff.com`) that is flagged as malicious. The document body text and embedded links suggest a phishing lure related to a scholarship application. The presence of multiple external PDF links, some benign and some potentially malicious, indicates an attempt to create a link farm or distribute further malicious content.

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=university+of+cambridge+scholarship+application+form In PDF document text
    • http://kozaw.creativityindevelopment.co.uk/uploads/1/3/0/9/130969742/nawesubimigomug-lifek.pdfIn PDF document text
    • http://fagojow.maennersymposium-schweiz.com/uploads/1/3/2/6/132680813/fefafodax.pdfIn PDF document text
    • http://files.lutterburnfineart.co.uk/uploads/1/3/0/7/130739039/3163191.pdfIn PDF document text
    • http://toxuw.dundeeareahistory.com/uploads/1/3/1/8/131858540/bipeviwubigoreno.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/1/0435/4513/3207/files/50639165090.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8897/7813/files/jedaxedajefoluluwugabev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67641838088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0470/6464/files/46845782323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1615/9381/files/woliperuzege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/wabamivupuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7750/0057/files/13037709270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/purabejotowozaguxod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gatafuruzakelimosileraji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4016/9384/files/fupadasidikunileso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jexisobipa.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 3

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_off0000648a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x648A 5864 bytes
SHA-256: f56487d907839efb109ddc52ec741ba36f6ecc61d83beb8007817e24175ad2ab
font_01_sfnt_off0000785e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x785E 10316 bytes
SHA-256: e72ccff591b903373805fa974907da9437dd2dbbaf398fdb05f42e653441798d

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