Malicious PDF — malware analysis report

Static analysis result for SHA-256 781e73922890e346…

MALICIOUS

PDF

54.2 KB Created: 2020-08-01 15:28:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: efa41b7dcbffa5b38fb2dcfb31e67699 SHA-1: d937553ed8168196e2c552497097ff5a0a8042bb SHA-256: 781e73922890e34640dc31ec365970761f403e77a3257119a2a09ac6153ed21e
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to redirector infrastructure like 'ttraff.ru', which is flagged as malicious. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the PDF is designed to act as a link farm or lure, directing users to potentially harmful websites for phishing or malware distribution.

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=how+to+export+as+pdf+in+illustrator In PDF document text
    • http://files.body-knowledge.com/uploads/1/3/2/6/132681824/2094315.pdfIn PDF document text
    • http://files.vetmobileclinic.com/uploads/1/3/1/3/131398532/tabumokuwev.pdfIn PDF document text
    • http://files.nsbonline.shop/uploads/1/3/1/0/131070718/xobiv_mowirasexuro.pdfIn PDF document text
    • http://files.theencouragementplace.com/uploads/1/3/0/9/130969659/kogilebo.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/1/0434/8418/4728/files/deloz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0706/5757/files/bagazesugedigidojidopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0256/7588/files/moxone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5857/8086/files/12734596013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9074/5246/files/zozuxotemimozokeba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7853/2758/files/77435753652.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3136/3747/files/zutepidubinorom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8362/0767/files/wonenebojipevufelovop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8402/1921/files/71569206996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0749/2775/files/73502065723.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5042/5765/files/gipenijunojunibimadejuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6112/5013/files/64587931603.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_off0000968d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x968D 5156 bytes
SHA-256: c9f941c3b54843c8b96044083cbe5f027b4393efe2fd39fe751a330eec109b2f
font_01_sfnt_off0000a835.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA835 10492 bytes
SHA-256: f9b90e8fa9120dec821691ac37e880052a92e14333ba95fd78dbff82b9afe5f7

Open this report in the interactive analyzer, or submit your own file for analysis.