Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcf0b2243cfb9fa5…

MALICIOUS

PDF

53.0 KB Created: 2020-08-05 02:42:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c3a4293d75312eed01a1c899a2b5db6c SHA-1: c79b7e4881b7a1d8a0b8a2b30b56d9e1dfee89be SHA-256: dcf0b2243cfb9fa508d38abbfcdcb028fc80ab5a42a764060bf9b8a70d62a226
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with heuristics indicating a link farm and a malicious redirector. The primary malicious URL identified is ttraff.ru, which is known to host redirectors. The document body, though heavily obfuscated, contains the same malicious URL. This suggests the PDF is designed to lure users to malicious sites, likely 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=biography+books+pdf In PDF document text
    • http://files.parosclassicalpianofestival.org/uploads/1/3/0/8/130813458/4464358.pdfIn PDF document text
    • http://files.redfishcottages.com/uploads/1/3/1/4/131483337/xugefur-xofejariba-raziv-kowajo.pdfIn PDF document text
    • http://files.abhyasayogabelfast.com/uploads/1/3/1/6/131606262/f78bf9e.pdfIn PDF document text
    • http://files.vittlevibes.com/uploads/1/3/0/7/130775982/aa9571c8b.pdfIn PDF document text
    • http://files.winzerfarmcda.com/uploads/1/3/1/6/131637658/b8269.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/1/0436/8865/7049/files/gefugosidel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5813/4182/files/melogakopazazenewebixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/minurodukoragavila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2041/8198/files/goxolivebadudifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2141/7123/files/79918928643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8286/6072/files/58595542764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1591/2098/files/11504284563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9032/2342/files/94222100544.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8072/0294/files/piladopisolaboneravap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0243/6512/files/chevy_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7932/7141/files/femota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8483/1125/files/16467507949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5700/5215/files/setesimazofo.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_off00009054.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9054 5624 bytes
SHA-256: 45305ed8eb2b451abf3389f51d3b3852ddcac53dacdf535800c10ceb61b94d0e
font_01_sfnt_off0000a37d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA37D 10356 bytes
SHA-256: 5f01fdf3aaf94d9c11e5d0a7b91b6f26e910bcea8db55e4785eeaf865cbdcd94

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