Malicious PDF — malware analysis report

Static analysis result for SHA-256 a66e9cb6592f5842…

MALICIOUS

PDF

46.6 KB Created: 2020-09-02 01:06:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a6e6fd3ec6fe3cdf5d8451fc392cb84 SHA-1: 150fc0dd55da384a748f9c6775f7a83ca09032e7 SHA-256: a66e9cb6592f584279f55d5a585c53a1173c4979293b37fb44db8864a2f8d933
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=short+gamma+nail+technique+guide'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary one being to a Shopify domain. The document body, though heavily corrupted, contains fragments suggesting it is presented as a 'short gamma nail technique guide', which is likely a lure to disguise the malicious intent of redirecting users to potentially harmful sites.

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/wix?keyword=short+gamma+nail+technique+guide
    • https://cdn.shopify.com/s/files/1/0431/6663/0050/files/color_psychology_in_interior_design.pdf
    • https://cdn.shopify.com/s/files/1/0429/6107/6387/files/82024327710.pdf
    • https://cdn.shopify.com/s/files/1/0431/3966/1981/files/setimetofapiloxupok.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kebiwubinixakagaxirefu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3916/1500/files/61488070072.pdf
    • https://static.usrfiles.com/ugd/43d598_723f879694d649c096429f3f562bcd36.pdf
    • https://static.usrfiles.com/ugd/e3325f_e81329e7e0084bb8b07970d092013187.pdf
    • https://static.usrfiles.com/ugd/38eac1_c604c0a356384e4388e9e7c6325b9a42.pdf
    • https://static.usrfiles.com/ugd/b8c837_3c887b865a5f4f738340d14dd2f2c369.pdf
    • https://static.usrfiles.com/ugd/0aab01_b05558f1c5334f25b6ca36b05c4be34a.pdf
    • https://cdn.shopify.com/s/files/1/0437/4292/0869/files/bunowejiza.pdf
    • https://cdn.shopify.com/s/files/1/0431/0827/0244/files/tizeliwepaduxem.pdf
    • https://cdn.shopify.com/s/files/1/0440/6237/6088/files/whatsapp_latest_version_apk_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/9892/2403/files/39623590387.pdf
    • https://static.usrfiles.com/ugd/c7a620_0dbe06165b6648ac9f01faabb2ac1d9e.pdf
    • https://static.usrfiles.com/ugd/d17951_b9ab3b113520443da5c36f4982639703.pdf
    • https://static.usrfiles.com/ugd/880a7e_e0f42ceb54a341539e08e90e7573f920.pdf
    • https://static.usrfiles.com/ugd/dc8a8e_1f921d74728f4e7c9fcc9415acabf620.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_off00006616.bin
078c109bbc338ded31aca9feabaa4882835f3985c27bbcc8d3f9113a4d733b14
pdf-font-stream PDF embedded font (sfnt) at offset 0x6616 5288 bytes
font_01_sfnt_off000077db.bin
e7b37e5c79469527f1e50ba5dad405166fd9a83ca555233b0b83c6b415653c38
pdf-font-stream PDF embedded font (sfnt) at offset 0x77DB 12324 bytes
font_02_sfnt_off00009f3c.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F3C 4324 bytes