Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2a99c87435d15fe…

MALICIOUS

PDF

40.8 KB Created: 2020-08-14 04:49:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c8745cfc818e2589396d76b8660912a SHA-1: cd894dba188d7f4ba57034d9ed0c0d75e2167cd0 SHA-256: e2a99c87435d15feec9b14ea0ca2ac346d5aaf225ad0c7d058a43da5ead88ffe
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, with the primary malicious redirector being https://ttraff.cc/pify?keyword=fold+simple+past+tense+form. This indicates a link farm or phishing attempt designed to lure users to malicious sites. The document body itself is heavily obfuscated but contains references to the malicious URL and other URLs hosted on cdn.shopify.com, likely as part of the link farm.

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=fold+simple+past+tense+form
    • http://files.1carter.net/uploads/1/3/0/7/130775916/fa50a8c.pdf
    • http://files.pettswoodrunners.org/uploads/1/3/0/7/130738620/a09775a0f46.pdf
    • http://files.media-mindz.com/uploads/1/3/1/3/131381031/mekigukolomigo-polizoxat-dazef-jijazow.pdf
    • http://files.nggabooster.org/uploads/1/3/1/4/131453402/fusibowazenobubunip.pdf
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/automotive_mechanics_books.pdf
    • https://cdn.shopify.com/s/files/1/0428/9229/6358/files/alcoholism_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/9370/4350/files/sazenukafezizo.pdf
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/gopajasefizeve.pdf
    • https://cdn.shopify.com/s/files/1/0431/1816/6167/files/58195123470.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0719/files/systematic_theology_grudem.pdf
    • https://cdn.shopify.com/s/files/1/0451/1848/8741/files/business_plan_restaurant_bar.pdf
    • https://cdn.shopify.com/s/files/1/0441/1280/6040/files/63703554356.pdf
    • https://cdn.shopify.com/s/files/1/0430/7661/6346/files/migisuzabokutisinemuv.pdf
    • https://cdn.shopify.com/s/files/1/0432/0156/0737/files/67349490717.pdf
    • https://cdn.shopify.com/s/files/1/0428/4976/3494/files/71343441046.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_off000062b5.bin
973d40c025dd121fb484f9a37679a02d28eb90a20e30a7f3808b6c2caf9d2a66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62B5 5144 bytes
font_01_sfnt_off0000741e.bin
78f415570683405947a925e3c2c632b3755dc31aa3693b8f8a0eee7f90106a43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x741E 9908 bytes

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