Malicious PDF — malware analysis report

Static analysis result for SHA-256 b53d502ab66dabff…

MALICIOUS

PDF

47.8 KB Created: 2020-08-24 22:33:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e3f873c9f3361a15b85b0f0ce23ac6f9 SHA-1: 233d6cbd92848a84eea9d45365e4a5e1faf43a32 SHA-256: b53d502ab66dabffd3f54d3534c9cdf13c04a24bd0742cc9c7cf7ac3253a5cfe
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing indicating it links to known malicious redirector infrastructure, specifically 'https://ttraff.ru/pify?keyword=bootstrap+form+templates+html'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to this malicious site. The presence of numerous other PDF links, many hosted on Shopify, further supports the 'link farm' heuristic, indicating a likely attempt to manipulate search engine results or distribute malicious 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.ru/pify?keyword=bootstrap+form+templates+html In PDF document text
    • http://files.amtboats.co.uk/uploads/1/3/1/3/131380841/bapelule.pdfIn PDF document text
    • http://vurur.snuggledupinc.com/uploads/1/3/1/4/131453536/9aa7de2c79.pdfIn PDF document text
    • http://files.juliemader.com/uploads/1/3/0/8/130813827/ratavevibin.pdfIn PDF document text
    • http://buzumu.mistergteacher.com/uploads/1/3/2/6/132682663/1269450.pdfIn PDF document text
    • http://files.hetztronics.co.uk/uploads/1/3/1/3/131380120/kipowul.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/1/0438/7880/9755/files/8970902140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/0683/6118/files/bhojpuri_film_nagin_movie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0796/5345/files/material_requirements_planning_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/8052/7527/files/25881268644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0143/0695/files/21045351959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4136/3870/files/83466314971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1710/7618/files/kirefolejufelo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6124/7129/files/28708897300.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2089/3864/files/julek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6778/5884/files/wiwesafu.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 7

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_off000078b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78B0 5192 bytes
SHA-256: f1e7d41d139857757b25e5e3a49840893045e42d2bfc888e4db54dec337a2e0e
font_01_sfnt_off00008a2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A2F 12484 bytes
SHA-256: 4b68ee0fadc7de79d97466688785559eb7de20ac909ba2c776fe606c4ad823df

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