Malicious PDF — malware analysis report

Static analysis result for SHA-256 799f3301fd0d32df…

MALICIOUS

PDF

43.2 KB Created: 2020-08-12 21:32:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8d9aa03d40ab538eba3a411e450afb2a SHA-1: b4098f6f98ef7d69f39fa6f613282431b24163d4 SHA-256: 799f3301fd0d32dfef6766aa467f789d90074d363ca71e78e4e7ae73d841a735
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a primary link to 'https://ttraff.ru/pify?keyword=fundamentals+of+data+communication+and+networking+pdf', which is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it's intended to lead the user to a malicious site. The presence of numerous other PDF links further indicates a link farm or SEO manipulation tactic to 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=fundamentals+of+data+communication+and+networking+pdf In PDF document text
    • http://files.underthemidnightmoon.com/uploads/1/3/1/3/131379231/4340061.pdfIn PDF document text
    • http://taxisa.thecaveacademy.org/uploads/1/3/1/3/131398362/daad8d1ee50d298.pdfIn PDF document text
    • http://files.alysonallen.com/uploads/1/3/1/8/131871859/9690646.pdfIn PDF document text
    • http://jadil.misfitsoffilm.com/uploads/1/3/0/7/130775440/pokilepor.pdfIn PDF document text
    • http://files.christianlindke.com/uploads/1/3/0/8/130874067/79a5730.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/1/0436/0149/4178/files/46611897397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9356/5342/files/debug_mocha_tests.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9828/3940/files/argentina_economic_crisis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/5153/6799/files/matrix_multiplier_calculator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lavijado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/40756623356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9464/7719/files/improving_self_esteem_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3462/1590/files/59239324383.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lovukapovilelogitolosir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6975/8874/files/44576282821.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_off00006aa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA9 5588 bytes
SHA-256: 72a39075c53ec9a98c7f0a93069996bb0d9425e4b8de7a0fd0ee5c29e8e1ed6a
font_01_sfnt_off00007da7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA7 9944 bytes
SHA-256: 5c8d4515954b9bbb984be1ac5acb2ed4fc5bc7269b6d62d5ed21fe06592a0860

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