Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c8f44fcd2a97e2b…

MALICIOUS

PDF

46.0 KB Created: 2020-07-30 21:19:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f02aa3badf18ad559506cbd2de0d0e6 SHA-1: a11e59c44f368530683368dcf5f05fa80d563361 SHA-256: 8c8f44fcd2a97e2b9194cead46cbe5b9a8157fae20df68738c310bae77ba84c0
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.ru/pify?keyword=reformed+systematic+theology+pdf', is identified as a malicious redirector. The document body appears to be obfuscated or corrupted, but the presence of numerous links and the malicious redirector strongly suggest an attempt to lead users to harmful content, likely for phishing or malware distribution.

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=reformed+systematic+theology+pdf
    • http://files.flowergirlkauai.com/uploads/1/3/1/4/131438202/vobopuwesogorokezuj.pdf
    • http://files.tradezonewestport.com/uploads/1/3/0/7/130739926/suzofipimog-fakusolaj-bojobebozipa-majepim.pdf
    • http://files.floridaufonetwork.com/uploads/1/3/0/7/130775368/lezutawejo_lusipaxajegefi_kizija.pdf
    • http://files.nancywijnants.com/uploads/1/3/1/8/131857758/2361119.pdf
    • http://files.wavesofwords.org/uploads/1/3/1/4/131453651/fowidowegu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fodafozisejuleluz.pdf
    • https://cdn.shopify.com/s/files/1/0433/8683/1004/files/nowoze.pdf
    • https://cdn.shopify.com/s/files/1/0432/7519/0422/files/safilajazemikuf.pdf
    • https://cdn.shopify.com/s/files/1/0432/4111/1707/files/14147490040.pdf
    • https://cdn.shopify.com/s/files/1/0431/9641/6157/files/71529357732.pdf
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/17238909339.pdf
    • https://cdn.shopify.com/s/files/1/0430/4191/5042/files/39675565944.pdf
    • https://cdn.shopify.com/s/files/1/0433/5802/7928/files/46571980576.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nomevorijodasulalo.pdf
    • https://cdn.shopify.com/s/files/1/0436/4229/0336/files/jukubop.pdf
    • https://cdn.shopify.com/s/files/1/0430/6495/0945/files/wumewexelowapisizazopa.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7884/files/xafalejonudipajadusos.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_off0000759d.bin
6f52472975c65a523417c00a074ee950774f51f543b1107420730b0ad81dae12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x759D 5360 bytes
font_01_sfnt_off000087ed.bin
f490966e20f9ddbb316aaefead5d7d4358e33f03020f0b61a52d978626151b96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87ED 10060 bytes

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