Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ff7adc76f9a0f9f…

MALICIOUS

PDF

43.8 KB Created: 2020-08-05 06:12:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 79b205a53a00ed52809255950270f3c8 SHA-1: 8a4e05763d58cbb6ecf3d8e5c74f59d081b8696b SHA-256: 8ff7adc76f9a0f9f2d74d96bd052ea2799435dc9959897ecd8bbf565c061164f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a link that redirects to a known malicious URL, disguised as a research paper. The document body and embedded links suggest a link farm or SEO poisoning tactic to drive traffic to malicious sites. The primary malicious URL identified is https://ttraff.cc/pify?keyword=empirical+literature+review+in+research+pdf.

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=empirical+literature+review+in+research+pdf In PDF document text
    • http://xugite.oakwren.com/uploads/1/3/0/7/130739564/1930038.pdfIn PDF document text
    • http://files.cleancozyauthors.com/uploads/1/3/2/7/132712355/265a83ff53.pdfIn PDF document text
    • http://files.alteanunez.net/uploads/1/3/1/1/131164052/tipeleguvuzo-redofumale-gunalige-zenal.pdfIn PDF document text
    • http://rokem.atftrainingcenter.com/uploads/1/3/1/0/131070450/80aaadf539.pdfIn PDF document text
    • http://files.minndakcki.com/uploads/1/3/2/3/132303230/sumametuko.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/1/0431/7013/6230/files/gexewixasoruniduroro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7465/0261/files/15671139975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8499/5991/files/368985194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1434/9215/files/dota_1_invoker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1459/4466/files/8980177671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/91168313524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/83367843289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5580/0732/files/gavabuzit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4389/8019/files/16589330081.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8207/2732/files/53485998243.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9028/8535/files/fididewoxosugitusinumod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7365/9292/files/kepobitugevadijamokizuxi.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 6

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_off00006c40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C40 5504 bytes
SHA-256: a1a36a8dfdc21903b418625429d177242eabb995dcdddebf01feff306ccc3032
font_01_sfnt_off00007ee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE2 10240 bytes
SHA-256: 75dd8a0a75ff30f35557daa157c61a0bda82ec55c2007e2aecb6ac42cc27eab8

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