Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e67c8dd9b98659b…

MALICIOUS

PDF

50.9 KB Created: 2020-08-04 19:00:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6abc671ee9d70f8940459634b87f36fc SHA-1: 0bbf2717392adec439380820052b4a99aa2ea88d SHA-256: 2e67c8dd9b98659b9220fddb51f6de52c8d077138a9872456e72a195480f933c
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=entrepreneurship+development+notes+for+mba+pdf'. This URL is presented within the document body, disguised as academic notes. The file also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on Shopify. The primary malicious IOC is the redirector URL, which likely leads to a phishing page or malware download.

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=entrepreneurship+development+notes+for+mba+pdf
    • http://files.xudedesigns.com/uploads/1/3/1/4/131455680/5c1852625.pdf
    • http://files.psucusa.com/uploads/1/3/0/8/130814193/5dcc558203533.pdf
    • http://files.theapostoliccommunion.org/uploads/1/3/1/3/131379296/3864083.pdf
    • http://files.petershenkinlaw.com/uploads/1/3/2/6/132681832/191218.pdf
    • http://laleg.barnarts.me/uploads/1/3/1/3/131379803/juxuw_lesim_datelij.pdf
    • https://cdn.shopify.com/s/files/1/0432/7079/9510/files/97034407279.pdf
    • https://cdn.shopify.com/s/files/1/0429/0985/9999/files/96537757755.pdf
    • https://cdn.shopify.com/s/files/1/0431/6004/3682/files/29671580918.pdf
    • https://cdn.shopify.com/s/files/1/0429/0222/5059/files/wekawawegalemujiponixe.pdf
    • https://cdn.shopify.com/s/files/1/0432/9455/6324/files/98754847267.pdf
    • https://cdn.shopify.com/s/files/1/0432/3170/7294/files/jepowabojeg.pdf
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/gunadosuvo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87463685859.pdf
    • https://cdn.shopify.com/s/files/1/0431/8255/5297/files/serum_protein_electrophoresis_interpretation.pdf
    • https://cdn.shopify.com/s/files/1/0434/1579/7917/files/55008511725.pdf
    • https://cdn.shopify.com/s/files/1/0437/9302/3133/files/4281694529.pdf
    • https://cdn.shopify.com/s/files/1/0437/6113/9861/files/pujozodojujabekij.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/
    • https://cdn.shopify.com/s/fil

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000088ef.bin
4e2f6514f2c8da489529f2cb20d4a1f2265d7c9275d16941706b120cecd09b78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88EF 5436 bytes
font_01_sfnt_off00009b42.bin
522cad1c6ae92f1a47764858e5bbd002109c44d76cd0c3bc6f68c124a526073f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B42 10224 bytes

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