Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7580b6b55953be4…

MALICIOUS

PDF

37.3 KB Created: 2020-08-07 02:48:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7b477825f835f910c0a8d8e6864d71a0 SHA-1: cc73a6ee00b2bc1a97099468c71364a6b93f1cb1 SHA-256: a7580b6b55953be49bc49357b5a4923f455f53ea23806a7fbe886190b6b107bd
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, likely for SEO poisoning. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is designed to lure users to download further malicious content. The document body contains obfuscated text and embedded URLs, reinforcing the malicious intent.

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.cc/pify?keyword=artificial+intelligence+and+machine+learning+fundamentals+pdf In PDF document text
    • http://files.unikzhi.com/uploads/1/3/2/6/132680860/649b0a30789.pdfIn PDF document text
    • http://files.tylerleighnicholson.com/uploads/1/3/1/4/131453194/woluraxupejew_vevusufoxiv_gesatuvakav.pdfIn PDF document text
    • http://files.designetchingandawards.com/uploads/1/3/0/7/130738662/rugavozu.pdfIn PDF document text
    • http://files.flourishkiwi.com/uploads/1/3/1/4/131482997/9648224.pdfIn PDF document text
    • http://files.harlanparkbaptist.com/uploads/1/3/2/6/132695478/2354188.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/1/0436/1909/0595/files/speed_velocity_and_acceleration_problems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9147/6133/files/kexeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5228/3542/files/benzoato_de_sodio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5117/1478/files/wapigiruzizepalivedif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3169/1421/files/20650720369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4267/6648/files/suvasukogevovuzawase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8063/7859/files/wuzamotiroboga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7727/8623/files/how_to_host_a_website_on_github.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/87387701330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4065/2960/files/cephaleuros_virescens.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2280/3363/files/damif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9380/2646/files/24688422771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1190/7488/files/degikaxetijebawax.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_off0000534b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x534B 5556 bytes
SHA-256: e8e13e367618474b7873b8596fa1c5e1e6dbecef1be20cf84a8f22d161c37568
font_01_sfnt_off00006603.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6603 9908 bytes
SHA-256: 36afb12b88c07cb9994b2b509c4ddabed14c7e1ac441a1034e074b6ec573e516

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