Malicious PDF — malware analysis report

Static analysis result for SHA-256 599f73708f92fde7…

MALICIOUS

PDF

36.6 KB Created: 2020-08-16 21:13:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 012937b54eb4a80ab55c710201844c9c SHA-1: 58af9f0fc77f093fc3b212d61fd09ded8b293d2b SHA-256: 599f73708f92fde7759205fda9a5bfdb330bccf20b15c369e05c89a7c42f0bd8
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL is 'https://ttraff.ru/pify?keyword=bondhurey+by+siam+video+song', which is likely used to redirect users to a malicious site. The document body is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf, a tool often abused for creating malicious PDFs. The presence of numerous external PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing malware.

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=bondhurey+by+siam+video+song In PDF document text
    • http://sixuk.newdundeefireworks.com/uploads/1/3/2/7/132740515/kikukases-tinepozogarafaw-refasidizej-zetako.pdfIn PDF document text
    • http://difom.francesharriet.com/uploads/1/3/1/3/131398406/9258108.pdfIn PDF document text
    • http://files.millennialbarbers.com/uploads/1/3/1/3/131380063/dodosomiju_luzijodim_jesezexafak_mofikoka.pdfIn PDF document text
    • http://files.bwmusic.net/uploads/1/3/1/4/131452823/6d7bd918.pdfIn PDF document text
    • http://zumose.classicadventures.co.uk/uploads/1/3/2/6/132695384/073938c38.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3523/8301/files/diteb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9923/5228/files/zebuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1058/7800/files/40582790956.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/7352/3112/files/application_letter_for_bonafide_certificate_from_college.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3264/0679/files/15760275726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/6615/0303/files/carpal_tunnel_syndrome_physical_therapy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/39806276645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5195/6894/files/80856763061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9985/7823/files/kuvarifuxivisupif.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000043ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43CA 5360 bytes
SHA-256: 5c08da294ea31eb2322f4c7bc52472c1f1ec09ddb888a67b95ae8e7130cc7b17
font_01_sfnt_off000055cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55CD 9872 bytes
SHA-256: a682be14711902d75bc1d7c1af9f79b8eb980e4495806ec1a30b4f6e3c378d62
font_02_sfnt_off0000777b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x777B 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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