Malicious PDF — malware analysis report

Static analysis result for SHA-256 8993057beb9fbefe…

MALICIOUS

PDF

66.4 KB Created: 2020-08-14 06:01:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9070d2427aac99c871a2345a8785be0a SHA-1: 3639b18e947c036e40dddd7d1518a91a60f60235 SHA-256: 8993057beb9fbefe435b58e1f0481b2cc3c4af98fbd33e4f3099a105b99723c8
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=bet365+app++uptodown'. This URL is presented within the document body, disguised as a bet365 app download. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on cdn.shopify.com. The primary malicious URL is the most significant IOC.

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=bet365+app++uptodown
    • http://files.th1rdspac3.com/uploads/1/3/1/4/131437157/403649.pdf
    • http://files.hart-ware.ca/uploads/1/3/1/4/131453354/16d0fa3.pdf
    • http://files.azrya.com/uploads/1/3/1/0/131070920/wivep.pdf
    • https://cdn.shopify.com/s/files/1/0431/6394/3067/files/gst_law_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/8239/1451/files/kobuzoniduba.pdf
    • https://cdn.shopify.com/s/files/1/0432/3937/5012/files/backward_integration_definition.pdf
    • https://cdn.shopify.com/s/files/1/0429/3237/1622/files/faxevixifoxadidokupu.pdf
    • https://cdn.shopify.com/s/files/1/0438/6911/0432/files/aroma_rice_cooker_8_cup_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/4247/9000/files/ronupubatipajutegi.pdf
    • https://cdn.shopify.com/s/files/1/0446/7671/0563/files/systematic_biology_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/5358/0439/files/papilas_gustativas_histologia.pdf
    • https://cdn.shopify.com/s/files/1/0431/3907/2161/files/56546597654.pdf
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/14150262562.pdf
    • https://cdn.shopify.com/s/files/1/0431/5011/4967/files/meloluvum.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009976.bin
d16af924cd68a9f9b686312e295b71d95b211fbc7fbb3f02e33bbd6452b3e9e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9976 5064 bytes
font_01_sfnt_off0000aab7.bin
84daf345e21b08075a6e329eeacb0a13a0447ddcc3efc64e98a9a4ab9c6a9d9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAAB7 1936 bytes
font_02_sfnt_off0000b3f8.bin
9fbca63db85d0f3731b026902db720b97233a3caf0e0ca4ed43c69ea734f5d4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB3F8 10364 bytes
font_03_sfnt_off0000d7b5.bin
d7ed20e4bafe5175d1154450e049f60715abfc0e410079b1c97cae374c138cd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B5 16364 bytes
font_04_sfnt_off0000ed8f.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xED8F 4324 bytes

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