Malicious PDF — malware analysis report

Static analysis result for SHA-256 26f95f73593cfa67…

MALICIOUS

PDF

53.6 KB Created: 2020-08-07 12:56:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3de913c6fd928f54dd5a26120d80ae19 SHA-1: ce041b68e4c68651106067712900ad853d127972 SHA-256: 26f95f73593cfa67a296d8f88b10a2f24df29345daf4f25fe371ca0063595ce8
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=ecosystems+theory+in+social+work+pdf'. This indicates the document's primary purpose is to redirect users to potentially harmful content. Additionally, a PDF link farm heuristic suggests the document is part of a larger SEO manipulation scheme to distribute malicious links. 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/pify?keyword=ecosystems+theory+in+social+work+pdf
    • http://nemog.miltonfame.org/uploads/1/3/1/4/131437363/pubapesovo-zekusapexew-pezalezo.pdf
    • http://files.newworldalpacatextiles.com/uploads/1/3/1/4/131483603/cdfa3d799fcf3d.pdf
    • http://files.tjoneseducator.com/uploads/1/3/1/6/131606890/8713539.pdf
    • http://duwuzeji.goldensamurai.net/uploads/1/3/0/8/130874431/zugefewuxaf-kewavi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2172/8933/files/76047083577.pdf
    • https://cdn.shopify.com/s/files/1/0430/3332/9817/files/97405497074.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63537272249.pdf
    • https://cdn.shopify.com/s/files/1/0438/5128/4642/files/90028979626.pdf
    • https://cdn.shopify.com/s/files/1/0429/8201/5129/files/vodumijekedod.pdf
    • https://cdn.shopify.com/s/files/1/0431/6404/1373/files/boravujuxevepixosopa.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/agario_bot_scripts.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/71299233386.pdf
    • https://cdn.shopify.com/s/files/1/0430/4044/0471/files/mining_trainer_pandaria.pdf
    • https://cdn.shopify.com/s/files/1/0439/9818/3582/files/41553515787.pdf
    • https://cdn.shopify.com/s/files/1/0432/8259/6004/files/52920422246.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/
    • https://cdn.shopify.com/s/files/1/0431/6404/1373/files/boravujuxevepixo

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000093e9.bin
c0514a289be7ee98da5fca120d7c9721c46fa922feac28f31a81f7af1b06ddf9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93E9 5608 bytes
font_01_sfnt_off0000a6f1.bin
1020a94202431d13e2db66b4fd75da725ecd18f080d20b0c6a2090fa57034e62		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6F1 9944 bytes

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