Malicious PDF — malware analysis report

Static analysis result for SHA-256 52915b74a00325a8…

MALICIOUS

PDF

81.8 KB Created: 2020-09-06 03:31:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65e94a2aafcf23843b05b55a7bb8f579 SHA-1: 93799360a3602c1f9f40e02deebc3a7df89f1c46 SHA-256: 52915b74a00325a8bfe912d8fecfdc40ce5bffe8ba667908f8d14c0a94d88e01
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a known malicious redirector. The embedded document body text, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=define+chloroform+in+french', which is flagged as malicious. This suggests the document's primary purpose is to redirect 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.ru/pify?keyword=define+chloroform+in+french
    • https://cdn.shopify.com/s/files/1/0435/0948/1624/files/employee_performance_evaluation_template_excel.pdf
    • https://cdn.shopify.com/s/files/1/0435/6803/8047/files/dragon_s_crown_pro_platinum_guide.pdf
    • https://cdn.shopify.com/s/files/1/0437/7955/5486/files/ruzab.pdf
    • https://cdn.shopify.com/s/files/1/0430/6773/6225/files/active_n_passive_voice_rules.pdf
    • https://static.usrfiles.com/ugd/c3f59f_c3a05afbfe2d40dab8e4aae9113e1258.pdf
    • https://static.usrfiles.com/ugd/c70c35_f6f44eabdd0b4398a30c3875f812b5e8.pdf
    • https://static.usrfiles.com/ugd/b8c837_6f4427a72ee54ff1ae66f07e83c5cc71.pdf
    • https://static.usrfiles.com/ugd/bb13a2_e195daabd365459fb04115eb622915ec.pdf
    • https://static.usrfiles.com/ugd/e23fbb_9e5e7e0308b246eaa6c05403b1fdf05f.pdf
    • https://cdn.shopify.com/s/files/1/0434/3067/4597/files/vibujeviweveliwapapazevaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/4903/3640/files/gilobu.pdf
    • https://static.usrfiles.com/ugd/d902bb_6152b99b5de448168b392ef71c1fc192.pdf
    • https://static.usrfiles.com/ugd/7ef0dc_fbda0f0ac08d46a5beac08a03026272b.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_off0000e7eb.bin
cf6bcbaf462759e04676f8989e7e87ed4d43c4317550ddbd0c5684ab0bd17b73		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7EB 6492 bytes
font_01_sfnt_off0000f81f.bin
c11d7a62161aacf883887444103e921f273e7a54dc22f19dc892c0357ce73c76		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF81F 4732 bytes
font_02_sfnt_off00010815.bin
080a4c51e9d89cc484595aef5e2a4a4e4b59e5f72bbff11d0a66c0048080a88d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10815 16056 bytes

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