Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6d5dfa4dc12405d…

MALICIOUS

PDF

54.2 KB Created: 2020-08-21 06:17:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87d712e81f168e4b9d54297a12467ee8 SHA-1: 70019dc94b7fb852c47cd2015b533047276dcaa7 SHA-256: f6d5dfa4dc12405d909cffe684d1dafcf2a9dd0758470656db6fb0db50591790
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains a significant number of embedded links, with one pointing to a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large external PDF link farm, and 'SE_LOLBIN_RUN_COMMAND' suggests the presence of instructions for executing commands. The primary malicious URL identified is https://ttraff.ru/pify?keyword=docker+run+android+app, which is likely used to redirect the user to further malicious content.

Heuristics 4

  • 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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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=docker+run+android+app
    • http://jowoxi.michaelgreermd.com/uploads/1/3/1/4/131483254/xenowadov.pdf
    • http://files.ftpc.org/uploads/1/3/1/8/131856725/bixosorimerikum_bopujirafewizuw_gavabos_petenedu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4027/6642/files/towetigifu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2398/3015/files/tituvejipexabisaxilar.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mefawubizujoki.pdf
    • https://cdn.shopify.com/s/files/1/0432/6716/2276/files/64869559675.pdf
    • https://cdn.shopify.com/s/files/1/0434/1301/2637/files/apio_propiedades_nutricionales.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/67951459409.pdf
    • https://cdn.shopify.com/s/files/1/0436/0844/0995/files/59978335384.pdf
    • https://cdn.shopify.com/s/files/1/0427/8570/2054/files/64213502868.pdf
    • https://cdn.shopify.com/s/files/1/0439/2812/5595/files/88361792232.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_off00006019.bin
9929d1d7d52d7aa38fe0de430ee5fc2a645d290cd4c92b7c65eaa8082a363fac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6019 4724 bytes
font_01_sfnt_off00007020.bin
bfd9ccfd13130ec28df1846f8e280bac78bc7c001b5481dd545cf8f91b4844b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7020 2396 bytes
font_02_sfnt_off00007ad3.bin
5137586e3393960c0477979d883ad8da3310ff07c4f5894858745474d1617e24		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD3 13972 bytes
font_03_sfnt_off0000a74e.bin
21e66e05c4b3657087bf2854812646a9e639a592c9ad8cfa5233340b1d4c4f70		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA74E 16612 bytes
font_04_sfnt_off0000bd73.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBD73 4324 bytes

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