Malicious PDF — malware analysis report

Static analysis result for SHA-256 15dda332fd91d0d0…

MALICIOUS

PDF

40.2 KB Created: 2020-08-10 16:12:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 053e58593cff0b36dd209946381c62f8 SHA-1: e8837ea1123959f6d525a7ac063e3b708529c7ff SHA-256: 15dda332fd91d0d0208f5309cb7d1563faed8f69a349744e9c9e6e5c39b046c9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many pointing to what appears to be a link farm designed to host SEO-optimized PDF files. One critical heuristic identified a link to known malicious redirector infrastructure at https://ttraff.ru/pify. The document body, though heavily obfuscated, contains this same redirector URL, suggesting the primary purpose is to redirect users to malicious content, likely a phishing or scam page.

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=propiedades+de+angulos+entre+rectas+paralelas+pdf In PDF document text
    • http://files.delaneyswiftart.com/uploads/1/3/1/4/131408954/serorezabetalirugedi.pdfIn PDF document text
    • http://tonije.mombabymelts.com/uploads/1/3/2/6/132681352/d1a8d516c2.pdfIn PDF document text
    • http://jazup.artistiquedanceacademy.com/uploads/1/3/1/6/131607600/gusokigibaduselidixa.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/1/0434/1003/0748/files/apple_id_scams.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8851/9080/files/25825435054.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/4710/5191/files/.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5802/8959/files/96181749154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0239/5813/files/45722105890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4715/7911/files/gawesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/openvpn_raspberry_pi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4519/1841/files/bopumatibitomegoxidutono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8270/3257/files/cerebral_contusion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4095/5803/files/lawuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1323/2024/files/45824645640.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7228/0981/files/tekezodotugatopuwaxowuta.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_off00005c8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C8D 5324 bytes
SHA-256: 899b7490f9a23e0caecc8895c681cabbd49cb9edf7110c284e2e960ffa30c7d8
font_01_sfnt_off00006eb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB0 10744 bytes
SHA-256: ce3d630179ebfe83f9b83ed14c5a45d8699ace6ea262aadc3e0d7dd3efd70baa

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