Malicious PDF — malware analysis report

Static analysis result for SHA-256 f302861494ce4247…

MALICIOUS

PDF

44.5 KB Created: 2020-07-29 19:40:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2e0e9c49f01bd3a4510cc9542c32b68e SHA-1: 435780b148e7dd2758a99e71c9126d3d5e21341d SHA-256: f302861494ce4247a77d4a0c31a1f2213ff1bcc9c17f1a1cae0fecb9ac909cba
194 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to redirector infrastructure, specifically identified as a malicious redirector and an SEO link farm. The primary redirector URL, 'https://ttraff.ru/pify?keyword=clinical+anesthesia+procedures+massachusetts+general+hospital+pdf', is designed to lure users with a seemingly relevant document title. While no scripts were extracted, the presence of embedded malicious links strongly suggests an attempt to redirect users to a phishing or malware distribution site, likely delivered via spearphishing.

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=clinical+anesthesia+procedures+massachusetts+general+hospital+pdf In PDF document text
    • http://files.chippewafsc.com/uploads/1/3/1/3/131397934/riwokotowekowewov.pdfIn PDF document text
    • http://files.fultoncountyhorseandpony.com/uploads/1/3/1/3/131378950/duxokoxebiru-fazegaz-kikitif-mabenetoxuzato.pdfIn PDF document text
    • http://files.shisko.com/uploads/1/3/0/8/130874489/xanuji_lejinusazaje_favilubaxu_rodejoza.pdfIn PDF document text
    • http://files.nickelcityalchemy.com/uploads/1/3/1/6/131637546/5866685.pdfIn PDF document text
    • http://files.belmonthypnosis.net/uploads/1/3/1/4/131409009/cc8426d66f94262.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/1/0431/4886/9789/files/vofidawod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7348/6496/files/mavivevememigobaxomob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7243/8947/files/nununiwopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1401/3606/files/rebizotiwobukijepugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7320/0537/files/danasasusevukebomepido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6314/8695/files/71005016388.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4726/3128/files/madexepesigifutediramu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7952/4759/files/narotegezukegezilizidibum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/39720928980.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_off0000704d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x704D 5476 bytes
SHA-256: 0b5eb11ef043bd30b2eedfdee160e41746e0473bfb091cf7f8896d41e39ba15a
font_01_sfnt_off000082af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82AF 9960 bytes
SHA-256: 5adbfbc22911e13eb4f3e81609a5eb55771229076fb53d4b4e7addc88b791bed

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