Malicious PDF — malware analysis report

Static analysis result for SHA-256 72d5a7010c9caf29…

MALICIOUS

PDF

38.1 KB Created: 2020-08-06 18:46:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 892e86b44228e5bfc7ef3762f23c1e93 SHA-1: 093b0fd1272c82ab7f10b3b977d7e5af7f73bced SHA-256: 72d5a7010c9caf296b84a8499737f9ba63e6070017d0cbcd8af2de874900b27c
194 Risk Score

Malware Insights

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

The PDF file contains embedded links that redirect to malicious infrastructure, specifically a link farm designed for SEO manipulation. The document body, though heavily obfuscated, contains a URL that points to a redirector, likely intended to phish users by masquerading as a bearing catalogue. The ML classifier strongly indicates maliciousness.

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=skf+taper+bearing+catalogue+pdf In PDF document text
    • http://files.activatingauthenticity.com/uploads/1/3/0/7/130739509/4728622.pdfIn PDF document text
    • http://guwew.tarafergusonphd.com/uploads/1/3/0/9/130969356/2179851.pdfIn PDF document text
    • http://files.weeklyrunt.com/uploads/1/3/2/7/132712234/b15bd11ed1df.pdfIn PDF document text
    • http://files.casewatson.com/uploads/1/3/1/4/131437087/potiv_gujimutipata_medexi_gaferaf.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/1/0428/1604/5222/files/37219646788.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/musegowanemedulibuferasem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0886/6974/files/watch_hunger_games_online_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31670740491.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1496/3868/files/7760363091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3278/7609/files/95348473358.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/nelumolapuwonegifutow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/zorovoripe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9838/3260/files/22461431500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/95416015441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/34098026403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1891/0870/files/bumexigaxabisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2114/8061/files/42741827765.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 4

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_off0000583c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x583C 5452 bytes
SHA-256: e58a858911865bf4007e8fe61c5feebd2606a36aee46adb3d97139a792631236
font_01_sfnt_off00006ad4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD4 9584 bytes
SHA-256: 3b60d3ce2e0a46106418d812675ec125e355d9bf8b1832ea0696ad06edd273f0

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