Malicious PDF — malware analysis report

Static analysis result for SHA-256 81a908e50db0fbcf…

MALICIOUS

PDF

51.8 KB Created: 2020-08-14 12:32:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 53f81aa38d07e6bc1e7eff0ef57ea80c SHA-1: 787e45efd6bb4b600434b57b30ba913cab48868a SHA-256: 81a908e50db0fbcf3dce434a62db3960db214d4d8cbc5b27b6d302ac5e1c61ee
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, many of which point to redirectors and SEO link farms, suggesting a phishing or scam attempt. The primary redirector URL is https://ttraff.com/wb?keyword=demarche%20administrative%20senegal%20pdf, which is flagged as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links indicate a malicious intent to redirect users to potentially harmful content.

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.com/wb?keyword=demarche%20administrative%20senegal%20pdf In PDF document text
    • http://gamiluta.mcrudin.com/uploads/1/3/2/3/132303382/davagixit_tejixuv_kilabodogodaluk.pdfIn PDF document text
    • http://files.roxbury5k.com/uploads/1/3/0/7/130775679/fexusutelisixo.pdfIn PDF document text
    • http://files.mizpah36.org/uploads/1/3/1/3/131379045/6624586.pdfIn PDF document text
    • http://files.homeinspectoralbuquerque.com/uploads/1/3/0/7/130775982/83d0f1021b36.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/1/0437/4809/8209/files/12827374051.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7193/8461/files/lafogeredofanuliseb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5097/5910/files/dofesunawu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2417/7576/files/relagurizafupekiwiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1530/6405/files/vatanozip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0510/0711/files/17577559903.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5753/7439/files/xodunizuluvikonexomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/80278007767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8421/8532/files/13616459147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2964/0854/files/time_zones_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8605/2518/files/beniseliv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2742/3654/files/27078352491.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1775/5034/files/34962629333.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_off0000872a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x872A 5628 bytes
SHA-256: eb364d7affc0584ba3b1425e43d22732f62a1905be1afa2c655b33610b097394
font_01_sfnt_off00009a38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A38 12320 bytes
SHA-256: e4872dac315a4fbd8572748b6e65f6d52d7bd999e5983dcebcf9498df3322441

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