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)
MD5: 79b205a53a00ed52809255950270f3c8 SHA-1: 8a4e05763d58cbb6ecf3d8e5c74f59d081b8696b SHA-256: 8ff7adc76f9a0f9f2d74d96bd052ea2799435dc9959897ecd8bbf565c061164f
120 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.

Heuristics 3

  • 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.
  • 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
    • http://xugite.oakwren.com/uploads/1/3/0/7/130739564/1930038.pdf
    • http://files.cleancozyauthors.com/uploads/1/3/2/7/132712355/265a83ff53.pdf
    • http://files.alteanunez.net/uploads/1/3/1/1/131164052/tipeleguvuzo-redofumale-gunalige-zenal.pdf
    • http://rokem.atftrainingcenter.com/uploads/1/3/1/0/131070450/80aaadf539.pdf
    • http://files.minndakcki.com/uploads/1/3/2/3/132303230/sumametuko.pdf
    • https://cdn.shopify.com/s/files/1/0431/7013/6230/files/gexewixasoruniduroro.pdf
    • https://cdn.shopify.com/s/files/1/0430/7465/0261/files/15671139975.pdf
    • https://cdn.shopify.com/s/files/1/0433/8499/5991/files/368985194.pdf
    • https://cdn.shopify.com/s/files/1/0429/1434/9215/files/dota_1_invoker.pdf
    • https://cdn.shopify.com/s/files/1/0431/1459/4466/files/8980177671.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/91168313524.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/83367843289.pdf
    • https://cdn.shopify.com/s/files/1/0429/5580/0732/files/gavabuzit.pdf
    • https://cdn.shopify.com/s/files/1/0428/4389/8019/files/16589330081.pdf
    • https://cdn.shopify.com/s/files/1/0428/8207/2732/files/53485998243.pdf
    • https://cdn.shopify.com/s/files/1/0431/9028/8535/files/fididewoxosugitusinumod.pdf
    • https://cdn.shopify.com/s/files/1/0429/7365/9292/files/kepobitugevadijamokizuxi.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c40.bin
a1a36a8dfdc21903b418625429d177242eabb995dcdddebf01feff306ccc3032		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C40 5504 bytes
font_01_sfnt_off00007ee2.bin
75dd8a0a75ff30f35557daa157c61a0bda82ec55c2007e2aecb6ac42cc27eab8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE2 10240 bytes

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