Malicious PDF — malware analysis report

Static analysis result for SHA-256 817c3b2462f2ee2c…

MALICIOUS

PDF

42.5 KB Created: 2020-08-12 12:20:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c0538513681ad8fe674eaa36de6174ee SHA-1: 8da9e90bfb0157fbebfef105928c7bf511ed93a0 SHA-256: 817c3b2462f2ee2c579b9850e72b397d4a9736abb3cebc65d707a1e1fb4ce37e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, includes the same malicious URL, suggesting a phishing or scam attempt to redirect users to a harmful site. The presence of a link farm and redirector indicates an attempt to obscure the final malicious destination.

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/pify?keyword=diaphragmatic+breathing+pdf In PDF document text
    • http://files.bethanylutheranrlf.com/uploads/1/3/1/3/131381819/sizumomonogup.pdfIn PDF document text
    • http://files.blainegonzalez.com/uploads/1/3/2/6/132696128/gozawejefin-dopenepaminibuf.pdfIn PDF document text
    • http://files.key2evolve.com/uploads/1/3/1/3/131378990/4207032.pdfIn PDF document text
    • http://xalib.coachlightconnections.com/uploads/1/3/1/0/131069839/1490568.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/1/0433/5733/9800/files/voting_list_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8236/6629/files/nedifuxedebewikasibuwolex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6640/1692/files/ludus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4143/0440/files/jutosoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1188/9573/files/gotirobenoxorokefupase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25322908130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/18784098861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1709/1744/files/regepovuwonixut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8348/9687/files/36698519316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43127542751.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/1400/0540/files/libro_para_aprender_a_dibujar_manga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8130/9085/files/duplicate_rows_in_excel.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_off000067c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67C8 5500 bytes
SHA-256: 2f1f29a8ee3d00f86eeb32ac959321ad92be77ad49a9e3cb9b7083331020317c
font_01_sfnt_off00007a4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A4C 10172 bytes
SHA-256: e5fc5de1e029f1018186deebbacc8f7659d6450a6192ef6fa0d8dd6bb58a2607

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