Malicious PDF — malware analysis report

Static analysis result for SHA-256 72b79eca69349189…

MALICIOUS

PDF

39.8 KB Created: 2020-08-12 00:53:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 286da241ae2be1d9839e6aa32f4b6197 SHA-1: e203d0db57691eb1477205bc946e1d61830f5397 SHA-256: 72b79eca69349189fef1957eb5cc4fb0a085fd9bf6dd419156e9889f2b95c0c7
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 redirectors designed to obscure the final malicious destination. The primary redirector URL is https://ttraff.ru/pify?keyword=vascular+anatomy+of+the+brain+pdf, which is flagged as malicious. This suggests a phishing or scam attempt using a link farm to distribute malicious content, likely a downloader or exploit. No scripts were extracted, but the PDF structure and embedded links strongly indicate malicious intent.

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=vascular+anatomy+of+the+brain+pdf In PDF document text
    • http://files.m3dance.com/uploads/1/3/1/8/131871698/26e2c9a10.pdfIn PDF document text
    • http://kegitil.mariahelliott.com/uploads/1/3/2/6/132682663/povazunuwatoxulo.pdfIn PDF document text
    • http://files.purchaseofmanhattan.com/uploads/1/3/1/1/131163693/rujepip.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/1/0431/5663/5804/files/wamitino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5310/4790/files/52333490913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6696/3621/files/nujapejakafewulaxoguvumag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2182/7222/files/wabotiradekubodurijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8200/7199/files/fiburunafiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/7454/5816/files/mastering_blockchain_andreas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3778/6266/files/pijegepezinusuzapi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6773/4171/files/girupefojelidi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0723/7531/files/24845448892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1648/6040/files/73123313225.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9200/0406/files/bekajigipafakaxokagomuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6544/9371/files/nejireponazasimapekas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3056/1436/files/14423859329.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_off00005e03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E03 5604 bytes
SHA-256: 58e8d9bb813e8969558723d4490d6d34ea7826c1a5ee0a6661c91d937c1f7f46
font_01_sfnt_off000070dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70DC 9764 bytes
SHA-256: e545e0fc81d5c1a702c0884ea856eccd9f048d244d50304d6b17195e3bb360b5

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