Malicious PDF — malware analysis report

Static analysis result for SHA-256 c857ebc50bbbd294…

MALICIOUS

PDF

35.7 KB Created: 2020-08-17 01:59:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fec8921c33793ff55d8825fbb4ee298d SHA-1: 5d5f12e4a421c9adfd3b7c4e9b4d8a62c34a8e78 SHA-256: c857ebc50bbbd294b69a4e6fea9418719d07eb1076a33dffb5f1bc1184f9f330
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text referencing 'Southpaw movie free' and the malicious URL. The PDF_SEO_LINK_FARM heuristic indicates the presence of numerous external links, suggesting a link farm or redirection scheme designed to distribute malware or lead to phishing sites. The primary IOC is the redirector URL.

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.ru/pify?keyword=southpaw+movie+free
    • http://files.wakefieldhockey.com/uploads/1/3/1/6/131636995/vitixalalewe.pdf
    • http://gosuj.midnightcoffeeinc.com/uploads/1/3/1/4/131454057/gutefevajobemaboge.pdf
    • https://cdn.shopify.com/s/files/1/0433/3161/6923/files/kixireboroxape.pdf
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/acs_biochemistry_exam.pdf
    • https://cdn.shopify.com/s/files/1/0437/2565/2136/files/sowuke.pdf
    • https://cdn.shopify.com/s/files/1/0435/3405/7621/files/64182884642.pdf
    • https://cdn.shopify.com/s/files/1/0448/1702/3138/files/64800280845.pdf
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/xebegobajededuvewawuze.pdf
    • https://cdn.shopify.com/s/files/1/0433/5190/0310/files/nuxatuvofirusevife.pdf
    • https://cdn.shopify.com/s/files/1/0430/8706/9348/files/wesavunirez.pdf
    • https://cdn.shopify.com/s/files/1/0434/0862/1719/files/abnormal_psychology_barlow_8th.pdf
    • https://cdn.shopify.com/s/files/1/0437/1903/2987/files/fema_is_144_test_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/0012/6885/files/nubulugizitunoxex.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_off00004c8c.bin
61f628f9989868a02633a031a254c58dd53917f022e0a38a58e682713233d8e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C8C 5188 bytes
font_01_sfnt_off00005e2b.bin
281129ceb68eb5eda382dbd950e8ef936cc7b54cbf5bdb5ed7b54419a45abe9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E2B 10684 bytes

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