Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecca3af68a7d5821…

MALICIOUS

PDF

57.1 KB Created: 2020-08-28 16:38:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66cddca803f31f435147bdec72def14b SHA-1: 2a6df3d6dd41a482b1d1be7c8fde3ed9acec1438 SHA-256: ecca3af68a7d5821a33240852dc53c3b4f8c2e493e98533acabe203f7491fb60
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. One of the primary links directs to 'ttraff.ru', a known malicious redirector. The document body, though heavily obfuscated, contains a reference to this URL, suggesting an attempt to redirect users to potentially harmful content. The presence of a link farm further supports the malicious intent.

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=putlocker+no+manches+frida
    • http://files.dragonfly-books.org/uploads/1/3/0/8/130874240/dbf6359d280f2.pdf
    • https://cdn.shopify.com/s/files/1/0431/3976/0295/files/nemonukaxupibapi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3429/files/aviation_safety_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/0388/8287/files/ejercicios_numeros_primos_y_compuestos_5_primaria.pdf
    • https://cdn.shopify.com/s/files/1/0431/5581/6608/files/14925545017.pdf
    • https://cdn.shopify.com/s/files/1/0431/5702/9019/files/zabimagiwepotefiwote.pdf
    • https://cdn.shopify.com/s/files/1/0430/8706/9335/files/40957418720.pdf
    • https://cdn.shopify.com/s/files/1/0429/0736/9639/files/annotated_bibliography_rubric_high_school.pdf
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/zebozokaxuwuja.pdf
    • https://cdn.shopify.com/s/files/1/0429/0645/2131/files/94877535195.pdf
    • https://cdn.shopify.com/s/files/1/0433/9302/4151/files/linekowir.pdf
    • https://cdn.shopify.com/s/files/1/0434/7930/2296/files/laranja_mecanica_online_legendado_me.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079b1.bin
058092a02450cee178afd2f02b03ab999ddc2174c0f0d25e70c0b9303fa245a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79B1 5328 bytes
font_01_sfnt_off00008b8a.bin
50ca125b0d257618552ed7dbde28693f79a27622ef902a95d7f43f51e5adca70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B8A 2240 bytes
font_02_sfnt_off000095a4.bin
dce3bb9029913b5a28b4f83c775d5361348c96aa82a49304dce4c4e61bd79bf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95A4 14180 bytes
font_03_sfnt_off0000c252.bin
44ec852068dc4d31738276f5724bdd4d47cdc8e17345993729f6c052c9f22ef6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC252 16064 bytes

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