Malicious PDF — malware analysis report

Static analysis result for SHA-256 53fed70b6a68b880…

MALICIOUS

PDF

53.3 KB Created: 2020-08-05 14:43:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4dbc028797feeac5ba9a91821cc6e12f SHA-1: ae5956aad20b7ad4138e91ae88e3120fe45bdd82 SHA-256: 53fed70b6a68b880efe48787458ca66165ec1176ebf15fa18ef0e0498a2c0f5e
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing indicating it links to a known malicious redirector, specifically 'https://ttraff.ru/pify?keyword=game+of+thrones+risk+map+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The presence of a large number of external PDF links further supports the SEO link farm heuristic, indicating a campaign to drive traffic to various sites, likely for malicious purposes.

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=game+of+thrones+risk+map+pdf In PDF document text
    • http://tudur.davidfalkdesign.com/uploads/1/3/2/6/132681482/zuponusijur.pdfIn PDF document text
    • http://files.jeehanquijano.com/uploads/1/3/0/9/130969426/aa9d02.pdfIn PDF document text
    • http://files.sitesofpassage.org/uploads/1/3/1/0/131071240/455213.pdfIn PDF document text
    • http://files.confidentialpathology.com/uploads/1/3/0/7/130738779/zuzonugizisetur.pdfIn PDF document text
    • http://files.countrycupboardantiques.com/uploads/1/3/1/1/131163635/691107.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/1/0428/9835/8432/files/11783771814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0159/3502/files/bidove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6012/4061/files/75674089115.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45035229099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6953/6411/files/parikaropugawikanamej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/7069579914.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6415/6575/files/19248835674.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/34529462859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/uploading_images_to_github.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6548/1118/files/36569270524.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_off000091b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91B7 5344 bytes
SHA-256: 7473925c2ba09fa4b73ea1a6692d8b9292f7745aafb4e50d67de9c6e981fb2c6
font_01_sfnt_off0000a3bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3BF 10748 bytes
SHA-256: 02745bc6bcabf63ad6eb1eb9abda126d4dee32f6e425a025a16b892a0369e60c

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