Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dafb0bb11bc903a…

MALICIOUS

PDF

32.1 KB Created: 2020-08-19 15:02:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f8273da1482cfcddbb28385cc5c4add SHA-1: 43d0a837eb680e0eb3e25912da01646ccfe8466a SHA-256: 3dafb0bb11bc903a3ccb7e10287661b0bcbb4e84bb2fa27aaaba21096993eaef
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious URL, disguised as a manual for a Bose Soundlink Mini II. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the primary link leads to malicious infrastructure. Additionally, the 'PDF_SEO_LINK_FARM' heuristic suggests the document is part of a larger scheme to generate traffic through numerous links, many hosted on Shopify. The document body, though heavily obfuscated, contains text related to the lure and the malicious redirector 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.cc/pify?keyword=bose+soundlink+mini+ii+manual
    • http://files.rlmgc.net/uploads/1/3/1/0/131070336/f628debd.pdf
    • http://suwene.upacs.com.au/uploads/1/3/0/8/130874104/78dd653d1b.pdf
    • https://cdn.shopify.com/s/files/1/0432/9262/3001/files/mudinukisowuvafanesor.pdf
    • https://cdn.shopify.com/s/files/1/0433/5111/3883/files/69320661685.pdf
    • https://cdn.shopify.com/s/files/1/0437/6972/5085/files/universal_studios_florida_map_2018.pdf
    • https://cdn.shopify.com/s/files/1/0428/0641/1431/files/nivimaditediraduloxu.pdf
    • https://cdn.shopify.com/s/files/1/0430/1943/6185/files/capitalization_worksheets_middle_school.pdf
    • https://cdn.shopify.com/s/files/1/0429/1333/3411/files/9241108349.pdf
    • https://cdn.shopify.com/s/files/1/0431/5935/5556/files/sapolakolibudor.pdf
    • https://cdn.shopify.com/s/files/1/0434/0563/9836/files/20508724673.pdf
    • https://cdn.shopify.com/s/files/1/0437/7031/4903/files/85099023673.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_off000041a0.bin
08c74bb22beb7573ea6eafb09a66498faf70a40156c96b7b652e05020b482118		 pdf-font-stream PDF embedded font (sfnt) at offset 0x41A0 4988 bytes
font_01_sfnt_off0000527e.bin
d5378244a8c3bdbec0023ab63b450e0e2b0966f2fd645546b891fbdf6b920100		 pdf-font-stream PDF embedded font (sfnt) at offset 0x527E 10036 bytes

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