Malicious PDF — malware analysis report

Static analysis result for SHA-256 a33306e06e8792ef…

MALICIOUS

PDF

42.7 KB Created: 2020-08-29 06:37:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f56e9339bc6fa4a931adabee4901a98 SHA-1: 2bfb5ff4a55be16f7ff218429828f03ba64e02f7 SHA-256: a33306e06e8792ef75e68679935a5b037137d571f6d21b00ffdf2602044e176d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a lure related to a 'Prison Break' subtitle package, which is a common social engineering tactic. It embeds a link to `ttraff.ru`, identified as a malicious redirector. This infrastructure is likely used to host or redirect to further malicious content, such as the PDF file farm also detected. The document body, though heavily obfuscated, contains the malicious URL.

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=prison+break+t%25C3%25BCrk%25C3%25A7e+altyaz%25C4%25B1+paketi
    • https://cdn.shopify.com/s/files/1/0435/4487/1080/files/letuxifir.pdf
    • https://cdn.shopify.com/s/files/1/0433/9639/9269/files/bar_psi_kpa_conversion_chart.pdf
    • https://cdn.shopify.com/s/files/1/0431/2023/0564/files/how_to_be_an_effective_worship_leader.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/11147191401.pdf
    • https://static.usrfiles.com/ugd/b8c837_b990027b51764463bd2c0b63f04a42d4.pdf
    • https://static.usrfiles.com/ugd/b8c837_d48435bfcd7b44a39adc667ed6fe7f03.pdf
    • https://cdn.shopify.com/s/files/1/0438/3450/7426/files/differentiated_lesson_plan_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/8582/4164/files/9782805016.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/befelovetojuru.pdf
    • https://cdn.shopify.com/s/files/1/0436/6483/4713/files/simple_medical_certificate_format.pdf
    • https://cdn.shopify.com/s/files/1/0429/8991/2218/files/mixerekubuxavi.pdf
    • https://cdn.shopify.com/s/files/1/0434/8664/2336/files/bedigixulabuwosige.pdf
    • https://cdn.shopify.com/s/files/1/0429/9482/7415/files/jiwevanogabewotifo.pdf
    • https://cdn.shopify.com/s/files/1/0432/0660/7012/files/lumoravarijafasalovizo.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_off00005c4a.bin
27f7e2cda5db0acdc24ae6ca94094ca7adb66847fae5071e6f210667756a3a26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C4A 5504 bytes
font_01_sfnt_off00006ee4.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE4 1800 bytes
font_02_sfnt_off00007771.bin
f00bc837f588186b8cf3e9ebe821a98f69c8335676b512788f85951bf53bda22		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7771 11564 bytes

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