Malicious PDF — malware analysis report

Static analysis result for SHA-256 a51791fe88844850…

MALICIOUS

PDF

38.9 KB Created: 2020-08-01 09:34:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fec3f6b85f924be3b47b75b7643f582e SHA-1: 0684071c93059b7f6b26741c5b0548c19808a514 SHA-256: a51791fe88844850a5956856da9f6af44f9ebb30ad22d7cad945afbe5bc7cae7
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting an attempt to manipulate search engine results or distribute malicious content. The presence of the redirector URL 'https://ttraff.ru/pify?keyword=javafx+tic+tac+toe+gui' strongly suggests a malicious intent to lure users to potentially harmful destinations.

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=javafx+tic+tac+toe+gui In PDF document text
    • http://files.girlindia.co.uk/uploads/1/3/1/6/131606739/xinenodozapexuvasuka.pdfIn PDF document text
    • http://files.myhealthysunshine.com/uploads/1/3/1/4/131453823/xozaden.pdfIn PDF document text
    • http://files.gamelan.com.au/uploads/1/3/2/8/132815742/xovorowax-razirevatulif.pdfIn PDF document text
    • http://files.bedsgympie.com/uploads/1/3/1/3/131382274/zawudimasekogotoxizu.pdfIn PDF document text
    • http://files.ed-conference.org/uploads/1/3/1/6/131637385/tosodudofopadez.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/1/0428/7276/6631/files/89105081174.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5050/8194/files/pdf_buddy._market_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5733/0853/files/50455747948.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4630/4920/files/88415937925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16485275060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8721/6293/files/nuzumufosexiwasus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6659/7288/files/nijinediza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/61838562546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/3567255800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9897/2066/files/lilegekogigodofiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4218/6150/files/tajutulavepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8590/3510/files/7288996226.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 6

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_off000058e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58E8 4860 bytes
SHA-256: 36e8a3cc2f5ed7a961d9ae7ca22f2ff3f523155c9ddcf98320b074978cec0b39
font_01_sfnt_off000069a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69A6 11016 bytes
SHA-256: fb0d2d9fc8e29dfd6bbb209f7e7659024ed63154a8029720d0e87fc9fb2b5cfa

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