Malicious PDF — malware analysis report

Static analysis result for SHA-256 79852f55ddfcf018…

MALICIOUS

PDF

39.1 KB Created: 2020-08-07 13:45:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ba6c373baa21016b4aea06d754c661a5 SHA-1: 008121d0b193b034e0e2486b330df777bb27e8be SHA-256: 79852f55ddfcf018b4ac659a55cc4a4c54dd38aefc0c758e940c9543fa5e6bf2
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to redirector infrastructure designed to obscure the final malicious destination. The primary redirector URL is https://ttraff.ru/pify?keyword=semi+detailed+lesson+plan+in+english+grade+7+pdf, which is associated with known malicious activity. The document body, though heavily obfuscated, contains references to the same redirector and other URLs hosted on Shopify and custom domains, suggesting a link farm or SEO poisoning tactic to distribute malicious content. 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.ru/pify?keyword=semi+detailed+lesson+plan+in+english+grade+7+pdf In PDF document text
    • http://files.troyelementaryspanish.com/uploads/1/3/0/8/130874587/kidurasin_buvabe_rejadakozera_lokelimenuselam.pdfIn PDF document text
    • http://files.impunity.site/uploads/1/3/2/6/132681204/lefopogi.pdfIn PDF document text
    • http://merusoj.legsonwheels.com/uploads/1/3/1/4/131437812/762335.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/1/0432/2734/9159/files/gakefewopodekudusukiregi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/dekapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7304/4634/files/41216120826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5913/5132/files/rogiloxagirasakopowugurel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2145/0914/files/22460334697.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1848/4888/files/73097210065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3191/9765/files/mununepafawusupifokefawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4116/8283/files/54525292280.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8078/1719/files/arrl_band_plan_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3635/9326/files/gunz_private_server.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9002/7430/files/exercices_de_conjugaison_avoir_et_tre_au_prsent.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_off00005a71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A71 5636 bytes
SHA-256: 9f17d16a6e88d8f983b9be7a11b750d3c0dcb8832f4b3d795b29c4c84258845e
font_01_sfnt_off00006d75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D75 10008 bytes
SHA-256: f2e9e9e476657d42448769f8b5aea200e1dc8110e760f11a265cb223c08e847a

Open this report in the interactive analyzer, or submit your own file for analysis.