Malicious PDF — malware analysis report

Static analysis result for SHA-256 3edeee16d5b61d3a…

MALICIOUS

PDF

56.1 KB Created: 2020-08-08 19:34:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f021c1165b070abdf7dbcafbd65b6822 SHA-1: d20f82d43b4df1cf8a3d87ca0552c74c3461d164 SHA-256: 3edeee16d5b61d3a4ea39781b6655cf0ac3ec928927e5484a0225255ab0ced21
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with the primary malicious URL being a redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the link `https://ttraff.ru/pify?keyword=algebra+nation+pdf` leads to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic further supports this, noting a mass of external PDF links, many hosted on `cdn.shopify.com`, suggesting a link farm designed to obscure the true malicious destination. No scripts were extracted from this sample.

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=algebra+nation+pdf In PDF document text
    • http://jofulajo.tdgun.com/uploads/1/3/1/6/131637814/fobubudovozam.pdfIn PDF document text
    • http://files.belantine.com.au/uploads/1/3/2/6/132695391/winurepu-riramanogat.pdfIn PDF document text
    • http://files.northernillinoispainting.com/uploads/1/3/1/8/131856574/7970532.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/1/0434/5495/5672/files/rizuxadumudaroxezu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0745/1042/files/sekidetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0821/9560/files/toefl_practise_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7768/8743/files/nubafukijif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4263/4917/files/angels_deserve_to_die.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9888/9635/files/kya_super_kool_hain_hum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2806/8005/files/dasovanixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4907/4336/files/28035366468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/56931422452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/dufubimadiwemuvilunijif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7623/0051/files/34883562502.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9562/1781/files/7407839005.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4618/3847/files/bach_lute_suites_for_guitar.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000094e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94E7 5160 bytes
SHA-256: fab0a35e203c01f9ab951a70b05f1c74c358b49f07e5de5dc402e364875a2d87
font_01_sfnt_off0000a687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA687 14268 bytes
SHA-256: a7c3d95246d8ed19c287afb555ad95c440562ca39a010e44ecf10e580895c121

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