Malicious PDF — malware analysis report

Static analysis result for SHA-256 45daa942fde6e567…

MALICIOUS

PDF

38.7 KB Created: 2020-08-21 15:05:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b2cee6e88459d356bb493ec3052e717 SHA-1: 47213f3d3bcc452a62c6ee27916c79da2d0284f2 SHA-256: 45daa942fde6e5679493c84663f0611d9bddba5a7da60fb98da9d7d9a43dc3e2
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one pointing to a known malicious redirector at 'ttraff.ru'. The document body and embedded links suggest a lure related to academic worksheets, likely to deceive users into clicking the malicious URL. The presence of numerous links, including those hosted on Shopify, indicates a link farm strategy to obscure the final malicious destination.

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=9-+4+compositions+of+transformations+worksheet+answers
    • http://files.msbaker.net/uploads/1/3/1/4/131407424/54f67.pdf
    • http://files.greenleafboutiquect.com/uploads/1/3/0/8/130874655/wizokibapa.pdf
    • http://files.modicash.nl/uploads/1/3/0/7/130739697/7410ed5247173cf.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/87195604050.pdf
    • https://cdn.shopify.com/s/files/1/0430/0364/2007/files/access_bars_manual_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0430/8022/0826/files/thunder_rock_vista.pdf
    • https://cdn.shopify.com/s/files/1/0441/2529/0648/files/17061278641.pdf
    • https://cdn.shopify.com/s/files/1/0433/6828/4319/files/gujubi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7881/1797/files/assignment_abroad_times_today_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/1311/8872/files/89835068688.pdf
    • https://cdn.shopify.com/s/files/1/0437/7611/4837/files/giripeligaxakumosese.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6429/files/gamasowuz.pdf
    • https://cdn.shopify.com/s/files/1/0429/3348/5727/files/rarufosusomajidozuki.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000498a.bin
78c66aa48e32d7b5413fa15c17f6e9203e93765fb772bb38da94683d5f1b665b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x498A 5348 bytes
font_01_sfnt_off00005b96.bin
42786e29dc412fe55ea8b59be4d41fa4c2ce48ba36a13d6d32d0037b0954e3e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B96 10044 bytes
font_02_sfnt_off00007dbd.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DBD 4324 bytes

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