Malicious PDF — malware analysis report

Static analysis result for SHA-256 15e8ee80f7a8d7f1…

MALICIOUS

PDF

46.2 KB Created: 2020-08-21 14:47:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 863c2e6425e692f0525edb13e6114e09 SHA-1: eac8ce325c1eda61dfb7870ac93a7f7c18a8c1b2 SHA-256: 15e8ee80f7a8d7f14ab471ce41e1ab093dfa20b9479bf56eaa1a6bbd72d45204
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) that is associated with malicious activity. The document body, though heavily obfuscated, contains the same redirector URL and also lists multiple PDF files hosted on Shopify and other domains, suggesting a link farm or phishing lure for free downloads. The ML classifier strongly indicates maliciousness.

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=short+persuasive+essay+on+school+uniforms In PDF document text
    • http://juvitet.invictund.com/uploads/1/3/2/6/132683071/tosefe-pazovupelitu.pdfIn PDF document text
    • http://files.desmoinesfigureskatingclub.org/uploads/1/3/0/8/130814758/rawuruwigivaxape.pdfIn PDF document text
    • http://kisesuzan.groundsquirrelbmp.com/uploads/1/3/1/8/131857114/5152494.pdfIn PDF document text
    • http://files.partnerhc.com/uploads/1/3/2/7/132740501/baxadilaxajaxolitox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9933/2516/files/alfabet_grecki_wymowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7923/6774/files/good_presentation_skills.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7103/5809/files/vugijerixefazesir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0667/3575/files/bofafodovetazujinin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7235/4459/files/stewart_calculus_7th_edition_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5636/4709/files/preparative_and_analytical_centrifugation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4132/3170/files/33425866898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3063/3881/files/ponuwukizulabemozome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3626/9983/files/jokodavibosufajufar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1214/5823/files/5227895863.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1790/9910/files/autobiography_worksheet.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006833.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6833 5404 bytes
SHA-256: 3d200e837be5c9400bdf4d3cffc56b3441b5069209a7a2cdf741f714fff5a225
font_01_sfnt_off00007a6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A6E 10340 bytes
SHA-256: 719da955c333b042c11be5b15a60daeb05ac775cb861c19bf250a66529fc39de
font_02_sfnt_off00009db3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DB3 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378