Malicious PDF — malware analysis report

Static analysis result for SHA-256 9666518e73901403…

MALICIOUS

PDF

42.0 KB Created: 2020-08-30 00:56:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50863178515fdee9ca4e8135463557c9 SHA-1: 914226cd30e27f0fe0952f698fbe06dfe14a6e70 SHA-256: 9666518e73901403ec5aa60caf48d6b78b438f463db9913924222d33ff24475c
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a Bosch appliance manual and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a link farm heuristic further supports the malicious intent of redirecting users to external, potentially harmful, 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.cc/wix?keyword=bosch+wta4000+manual
    • https://static.usrfiles.com/ugd/b8c837_6da63428f93e4d8aa7d384ada091b80b.pdf
    • https://static.usrfiles.com/ugd/b8c837_6488a0cfe728435b831603c2fb947484.pdf
    • https://static.usrfiles.com/ugd/b8c837_b8aeafbef4f54d0883ca3820e25ac78c.pdf
    • https://static.usrfiles.com/ugd/b8c837_8df28bd05ccb41a399151a157c93f8d6.pdf
    • https://static.usrfiles.com/ugd/ad2ade_f0590490fdd04d2798a2ea9712bd8f50.pdf
    • https://cdn.shopify.com/s/files/1/0430/6078/9409/files/51102740149.pdf
    • https://cdn.shopify.com/s/files/1/0437/8597/8018/files/49352452980.pdf
    • https://cdn.shopify.com/s/files/1/0432/3776/9383/files/sufariniriz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0258/4480/files/24104835837.pdf
    • https://cdn.shopify.com/s/files/1/0433/8375/0814/files/mamopibuna.pdf
    • https://static.usrfiles.com/ugd/b8c837_dbd9e75d778640b4b357b5f909b12d62.pdf
    • https://static.usrfiles.com/ugd/b8c837_fcd4a41a79af447bb24ddede2b7f64e0.pdf
    • https://static.usrfiles.com/ugd/b8c837_53ffbf92a211448f8ce4d0da030e7222.pdf
    • https://static.usrfiles.com/ugd/299074_cc5570ffbae94227828d81499783ccf7.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_off000066aa.bin
ae703fe331dff1a2541a1cffac4b3ac0020df11a89a09d234253c864739b02ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66AA 5312 bytes
font_01_sfnt_off000078ab.bin
9fef56e0ac51f2faf5d54ed6382491ca61d10b9016dda27ccb9aa8bd669fcedf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78AB 10032 bytes

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