Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfe49aabbdd2f2fd…

MALICIOUS

PDF

47.2 KB Created: 2020-08-12 07:15:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6687b96889c7cfb89dbeea556ded1ab2 SHA-1: 886404bf719389e2961cbb750446d37a2c95d08e SHA-256: cfe49aabbdd2f2fd180a379631353fcd9b5b91747c5d16a9fa198d2aa1a59d1a
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/wb?keyword=tensiometro%20manual%20mercadolibre'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, also contains the primary malicious URL. The combination of these factors strongly suggests a phishing or redirection attempt.

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/wb?keyword=tensiometro%20manual%20mercadolibre
    • http://files.sogchurch.net/uploads/1/3/1/4/131407944/zevajawewe_zoxidot_xoxajib.pdf
    • http://files.peachrent.com/uploads/1/3/2/7/132741144/puzaletixevewenoz.pdf
    • http://files.whiteschapelumc.com/uploads/1/3/1/4/131438718/kesipesunijejo_motiwinatinam.pdf
    • http://files.timkentart.com/uploads/1/3/0/7/130776075/7659163.pdf
    • http://files.dunkislandviewcaravanpark.com/uploads/1/3/1/4/131437453/bifexaji.pdf
    • https://cdn.shopify.com/s/files/1/0428/5395/7799/files/gelivibojojakafefuwe.pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/blank_calendar_september_2020_printable.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/67256100121.pdf
    • https://cdn.shopify.com/s/files/1/0430/3749/1354/files/37624166367.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/how_much_have_you_spent_on_league.pdf
    • https://cdn.shopify.com/s/files/1/0434/8539/7152/files/kasupunofisexisoja.pdf
    • https://cdn.shopify.com/s/files/1/0432/7315/8821/files/23748908774.pdf
    • https://cdn.shopify.com/s/files/1/0439/3641/5899/files/jiwewupa.pdf
    • https://cdn.shopify.com/s/files/1/0433/3659/7654/files/walaledavesaduwomame.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dotalufakelani.pdf
    • https://cdn.shopify.com/s/files/1/0433/0923/6374/files/47764256451.pdf
    • https://cdn.shopify.com/s/files/1/0430/9703/0817/files/95327745256.pdf
    • https://cdn.shopify.com/s/files/1/0435/3441/8072/files/76133877033.pdf
    • https://cdn.shopify.com/s/files/1/0437/1313/4757/files/84462129027.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007741.bin
282684c9c2ca18318e505fb308ef78adeb3eefc05ff17496d13fb1f0b7134e46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7741 5176 bytes
font_01_sfnt_off000088b5.bin
91df84b79db883900a25c9314999e5ba0388b4ed2cebb9dd824b0cb7314e4b3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88B5 11652 bytes

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