Malicious PDF — malware analysis report

Static analysis result for SHA-256 584ca2cc34a37003…

MALICIOUS

PDF

38.7 KB Created: 2020-08-05 16:32:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4ceb0d3aa80eb194bf9096a39aac371c SHA-1: 543ae36851ce5c62260fc34b3993d7c71b24b02a SHA-256: 584ca2cc34a37003872ff95453e0923923b1857aae897fbbef35a6aff4e38e68
202 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many of which point to domains associated with link farms and redirectors, such as 'ttraff.ru'. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that at least one URL leads to known malicious infrastructure. Additionally, the 'PDF_SEO_LINK_FARM' heuristic suggests a large number of external links were generated, likely to manipulate search engine results or distribute malicious content. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic further supports a lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=partnership+agreement+example+pdf In PDF document text
    • http://files.ipe-pain.com/uploads/1/3/0/7/130775310/533208.pdfIn PDF document text
    • http://files.sarahelizakelly.co.uk/uploads/1/3/2/6/132683017/revedodagunirox.pdfIn PDF document text
    • http://files.servingwithjoyhealer.com/uploads/1/3/0/9/130969740/b70171f50ff0.pdfIn PDF document text
    • http://files.arnoldroad.org/uploads/1/3/2/7/132740763/5292589.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/1/0429/3863/0300/files/calculus_early_transcendentals_briggs_cochran.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8576/6561/files/7486773930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8085/1362/files/vanafisetopuxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4388/0103/files/tovodub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1509/2894/files/attachment_theory_adults.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7405/0458/files/70069459474.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5004/9448/files/jifufirawozir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1969/7310/files/pesigidalilakevigaxupa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4335/6825/files/vowewowibeninole.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 5

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_off00005a61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A61 5524 bytes
SHA-256: a9bdedc1389456560c23d66a4a83f00490091c397264aee77a739b87a3867e97
font_01_sfnt_off00006d0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D0B 9728 bytes
SHA-256: 0f8e547583ca5383aeedad7a1e50a0f04410cfbfb727f12841f278204b4be930

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