Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a1071b20162eee2…

MALICIOUS

PDF

35.1 KB Created: 2020-09-04 08:05:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70495f8d81b57fdac31cd9b00c1c401f SHA-1: f8b6c37f41eb7198736dcb26ecb667dc5c248330 SHA-256: 8a1071b20162eee2e5dd3897f1d0fd4b37dd650b10614fd398a9724497800e3d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to a redirector service. The document body, though heavily obfuscated, contains text related to 'laser cut templates' and a URL that appears to be a redirector. This suggests a social engineering attack aiming to direct users to malicious content.

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.link/pify?keyword=laser+cut+templates+house
    • https://cdn.shopify.com/s/files/1/0439/0486/0328/files/plexiglass_sheets_1_2_inch_thick.pdf
    • https://cdn.shopify.com/s/files/1/0431/6083/0116/files/jutuporixerozuxaluwiwu.pdf
    • https://cdn.shopify.com/s/files/1/0429/7054/6335/files/98008665620.pdf
    • https://cdn.shopify.com/s/files/1/0430/3765/5191/files/dunawikojako.pdf
    • https://cdn.shopify.com/s/files/1/0461/5549/7635/files/adblock_chrome_mac_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7997453156.pdf
    • https://cdn.shopify.com/s/files/1/0437/3640/0037/files/2005_chrysler_pacifica_repair_manual_free.pdf
    • https://static.usrfiles.com/ugd/b8c837_d3902005ac65449fa4739ab3008de5bf.pdf
    • https://static.usrfiles.com/ugd/02beb7_ffffe1b479df4df08e456385625b9310.pdf
    • https://static.usrfiles.com/ugd/b8c837_3d7181c1157d4d9a84a6df8d0bfb831f.pdf
    • https://static.usrfiles.com/ugd/a4e402_f68412bf5856491f8b023ea7c7b433de.pdf
    • https://static.usrfiles.com/ugd/d01287_a1c54498b1bb4d0589bd0fd4fde87265.pdf
    • https://static.usrfiles.com/ugd/cc14e4_5872d1a7c67e4ab58af40812dfc6c7e6.pdf
    • https://static.usrfiles.com/ugd/b8c837_2c86a6a768184e918a51f511b9c0e906.pdf
    • https://static.usrfiles.com/ugd/83e24f_8b651247ffa84362b77d3548e798a4d4.pdf
    • https://static.usrfiles.com/ugd/3b7182_269b2d4fd0d24ad7adca31482d23720a.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_off00004197.bin
31ba7caca9d7a2504849091786ac227e3752110077a111e50fa7e9909f65d27f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4197 4840 bytes
font_01_sfnt_off00005206.bin
9cc0eb61446fdc398200665cc05bf9f14c882b3eb423923c0c60c203ec703139		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5206 9376 bytes
font_02_sfnt_off00007157.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7157 4324 bytes

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