Malicious PDF — malware analysis report

Static analysis result for SHA-256 c800e8b670f42169…

MALICIOUS

PDF

33.7 KB Created: 2020-08-25 06:52:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bf2aa05d57804eed3fa40aef6715e9df SHA-1: 1776c98afabacd4a466eacc5779c7ae4e6db15c9 SHA-256: c800e8b670f4216989e1efa9943b62251ec3dffeed386d27498ea0d18d8dd874
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=afro+soul+songs+free'. This URL is presented within the document body, disguised as a search result. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The ML classifier strongly supports the malicious nature of this PDF.

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=afro+soul+songs+free In PDF document text
    • http://files.hvcresearch.com/uploads/1/3/2/7/132710659/zobemoxesab_sikeponeku_tadusefuz.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/1/0433/1952/5531/files/30478188451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3654/0056/files/50279365118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9920/2467/files/gekojewifamowixuni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2971/7407/files/susigowaxadejesoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6490/1270/files/goanimate_4_schools.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7759/1449/files/nafoduvuxanug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/90788965189.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2674/2421/files/82925924380.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5298/9605/files/neoliberalism_and_globalisation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6678/5949/files/abordagens_pedaggicas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2602/8456/files/33300910795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70998441087.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 2

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_off00004882.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4882 4712 bytes
SHA-256: fed9de9d8b9c02f13f90c9da7b20a578058fc7632278f9af6196daf728a1fb68
font_01_sfnt_off0000589d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x589D 9944 bytes
SHA-256: a32f578a8aba5b42a2efb11eeb2fc0bd277d70a6f8b96dfde147a70b50af17f2

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