Malicious PDF — malware analysis report

Static analysis result for SHA-256 191776f69a340838…

MALICIOUS

PDF

35.9 KB Created: 2020-08-20 03:24:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86fefc0290afb5dc22a447ac7e913b8a SHA-1: 3241c474e8ff966691010e15763a13eb2875f7b6 SHA-256: 191776f69a3408387052317d311481d811988aa19dc31f8d279db14349f66750
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination of the malicious content. The document body, though heavily obfuscated, contains the URL and appears to be a lure related to 'kannada songs free'. The presence of a link farm heuristic suggests an attempt to artificially boost search engine rankings for malicious content. No scripts were extracted from this sample.

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.cc/pify?keyword=chinnari+mutta+kannada+songs+free
    • http://rabose.mcsac.net/uploads/1/3/0/7/130738542/rexizev-jevasajikoselos-rowewasudabo-waxodiwuvusaru.pdf
    • http://files.chloeadlerteaching.com/uploads/1/3/0/7/130775400/sarazasogu_vasadogalu_banedegobeninu_virowejo.pdf
    • https://cdn.shopify.com/s/files/1/0428/6477/1238/files/farujalij.pdf
    • https://cdn.shopify.com/s/files/1/0429/7470/7868/files/42381460711.pdf
    • https://cdn.shopify.com/s/files/1/0432/6604/8164/files/ato_company_tax_return_form_2016.pdf
    • https://cdn.shopify.com/s/files/1/0437/1814/8261/files/wiwimupokewiwimepez.pdf
    • https://cdn.shopify.com/s/files/1/0428/3927/7734/files/kizipopaduza.pdf
    • https://cdn.shopify.com/s/files/1/0434/4525/6352/files/jaruzu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3064/2837/files/pebazomujedu.pdf
    • https://cdn.shopify.com/s/files/1/0435/4169/2570/files/ccna_2_chapter_7_quiz_answers_2019.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_off0000412a.bin
05f0b9114d2807c1ac6d465bcc1ff3e23c06f03a8d363cec4d2ae75a4b9b1307		 pdf-font-stream PDF embedded font (sfnt) at offset 0x412A 5260 bytes
font_01_sfnt_off000052d4.bin
6fcdd5eb6329cd284ff971a526ecf07750837fee441f237901d7d5ded5bdff44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52D4 9980 bytes
font_02_sfnt_off000074fc.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74FC 4324 bytes

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