Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6d97b99efd3823b…

MALICIOUS

PDF

56.2 KB Created: 2020-09-05 15:58:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6201ed4afa3ed486fc9f2a9e548333d6 SHA-1: 2b2b041874bb654e9265a85543ad9ca5d6c51c41 SHA-256: b6d97b99efd3823b54091edc8df97f423457e957effb58924a337d9ebb358783
160 Risk Score

Malware Insights

MITRE ATT&CK
T1059.003 Windows Command Shell T1204.002 Malicious Link

The PDF contains a mass external link farm and a specific URL pointing to a redirector. Crucially, the document body instructs the user to copy and paste content into a shell, indicating a social engineering lure to execute commands. This suggests the PDF is a dropper or initial access vector designed to lead the user to download and execute a malicious payload from the provided URL.

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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.club/wix?keyword=platformio+vscode+tutorial
    • https://static.usrfiles.com/ugd/b8c837_0b85067cdeb548399a006cf4caf3c6a1.pdf
    • https://static.usrfiles.com/ugd/ccb1c6_3a5e84652dfd48d195f95ed71a93c2b5.pdf
    • https://static.usrfiles.com/ugd/0c268c_349cb5d8354d42a2bbc7343d95ec47ff.pdf
    • https://static.usrfiles.com/ugd/87a178_c68f2c87322b4f87b57a42cf0f8a0ebe.pdf
    • https://static.usrfiles.com/ugd/b8c837_8674ca55ab884b7881aba10e2e0f5705.pdf
    • https://static.usrfiles.com/ugd/1a89c8_54fe96288054493d8e4b36bd84399745.pdf
    • https://static.usrfiles.com/ugd/20d83a_f27720929f194fecacba45c21f7ffaf7.pdf
    • https://static.usrfiles.com/ugd/ca300b_ccc1f9840f464c269d5565f1acb8a40a.pdf
    • https://static.usrfiles.com/ugd/b8c837_828c7b6b1e374f26b03c6deba4942538.pdf
    • https://static.usrfiles.com/ugd/63d3ad_c81b84a3a59f403cb8fece6dcc62dc9f.pdf
    • https://cdn.shopify.com/s/files/1/0438/2644/6498/files/dukebakewolivajof.pdf
    • https://cdn.shopify.com/s/files/1/0434/3064/1829/files/fabazuwozepor.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50751207741.pdf
    • https://cdn.shopify.com/s/files/1/0463/2513/7563/files/pennsylvania_state_tax_reporter_89-_106.pdf
    • https://cdn.shopify.com/s/files/1/0428/1260/4582/files/advancing_vocabulary_skills_chapter_17_answers.pdf
    • https://static.usrfiles.com/ugd/b8c837_03b79bbc41cb40b0a2e6c983721a8b59.pdf
    • https://static.usrfiles.com/ugd/2b25e8_8c70ea5780604d5eb9c3e44ce8fbd514.pdf
    • https://static.usrfiles.com/ugd/b8c837_6c3396a730224ef3be5a2a9c5f2265b8.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/
    • https://static.usrfiles.com/ugd/b8c837_8674

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000781f.bin
728c16e0118007bfaf22f563a8ff24c37d8f634805794e8cdb1b6ef7981c4d60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x781F 5004 bytes
font_01_sfnt_off00008922.bin
14a247ac7eb8043ccc93668e2ed0646ca242493c61bacffac0935011e06d1331		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8922 10680 bytes
font_02_sfnt_off0000ad9e.bin
49d97867fed4f0fb50c63874ed474c5a9565e17bb08e6e58a502929938c66dd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD9E 17200 bytes
font_03_sfnt_off0000c49e.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC49E 4324 bytes

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