Malicious PDF — malware analysis report

Static analysis result for SHA-256 597a1c969a0f78a8…

MALICIOUS

PDF

51.4 KB Created: 2020-08-29 02:24:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6ecd9d054c107c7177fb7f0950f007a8 SHA-1: 3c18fdcc1327b911d5fc2035b71269855e750d6f SHA-256: 597a1c969a0f78a8993abe3c36d34736ae917a6cf5b20905ecd9b4b5b32d004b
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL for the malicious redirector, suggesting an attempt to lure users to a harmful site. The presence of a large number of external PDF links, many pointing to Shopify, indicates a link farm strategy, likely for SEO manipulation or to obscure the malicious destination.

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/wix?keyword=warrior+cats+ultimate+guide+pictures
    • https://cdn.shopify.com/s/files/1/0434/6229/5716/files/hotel_rwanda_movie_script.pdf
    • https://cdn.shopify.com/s/files/1/0433/4669/0203/files/51304720216.pdf
    • https://cdn.shopify.com/s/files/1/0430/9850/5377/files/86613614619.pdf
    • https://static.usrfiles.com/ugd/b8c837_6d237b10b96e43ccbd019bb6ae23e325.pdf
    • https://static.usrfiles.com/ugd/b8c837_086d2536974f4e30a82be9872f82ec84.pdf
    • https://static.usrfiles.com/ugd/b8c837_2f46307689d54debacfec8c14670a98d.pdf
    • https://static.usrfiles.com/ugd/b8c837_89bdfcb408a2446a8d6a9903e6be2c9b.pdf
    • https://cdn.shopify.com/s/files/1/0428/6709/7756/files/burasaliravimumogejef.pdf
    • https://cdn.shopify.com/s/files/1/0433/8758/4675/files/tecumseh_carburetor_adjustment_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/5935/4517/files/emotional_abuse_definition.pdf
    • https://static.usrfiles.com/ugd/b8c837_f7d85ffc7e1344a5ac97b1d8aeef9855.pdf
    • https://static.usrfiles.com/ugd/b8c837_8afa378f9c414a4cad1c4fd2df8203d2.pdf
    • https://static.usrfiles.com/ugd/b8c837_e77ac6e23bbe420dbf74ac012ce76e96.pdf
    • https://static.usrfiles.com/ugd/b8c837_7bcd9a625cd74dc1851783277a9d238b.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_off00008c82.bin
46746d2af4111a825aca30deb9059972abe3a61bc8cb7cdf7a535941f11c0ef8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C82 5404 bytes
font_01_sfnt_off00009ed2.bin
d0e2035b10d5ea61f269b15d2475d9765a5712b8e0b159a6ca73f1d68d62a6f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9ED2 10044 bytes

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