Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e38bab287e980f5…

MALICIOUS

PDF

45.2 KB Created: 2020-09-06 23:55:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7dcc32f0632f08e7bc9b9059a307563c SHA-1: 7568a7164bddbeb5f7cdd5d79bb9d9ef5eb3c380 SHA-256: 8e38bab287e980f54b45ba7efc87356813a3230d5090706625ffdcd442e18c5a
120 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to redirect users to a malicious website, specifically advertising 'pokemon game gba rom'. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the primary URL is associated with malicious redirector infrastructure. The PDF_SEO_LINK_FARM heuristic indicates the document is part of a larger effort to artificially boost search engine rankings, likely to distribute malware or facilitate phishing. The embedded URLs, while many are benign, serve the purpose of the link farm.

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.club/wix?keyword=pokemon+game+gba+rom
    • https://static.usrfiles.com/ugd/e2c250_3577faee84da4a16ba9e5fcccd2b86b6.pdf
    • https://static.usrfiles.com/ugd/110ef3_a549103a4d304bc39b9801c5b032dda8.pdf
    • https://static.usrfiles.com/ugd/e4ff69_782053a023c241479a06c34e58e07eeb.pdf
    • https://static.usrfiles.com/ugd/253000_c79b922a29c64bcb968f46b9a17a1ff5.pdf
    • https://static.usrfiles.com/ugd/b8c837_c1e374d10a264b2bbbd3c903cc4ae942.pdf
    • https://cdn.shopify.com/s/files/1/0437/3676/0485/files/free_english_synonyms_and_antonyms.pdf
    • https://cdn.shopify.com/s/files/1/0432/6365/6099/files/kinadogevowilovoxoxit.pdf
    • https://cdn.shopify.com/s/files/1/0428/4196/4710/files/82153109559.pdf
    • https://static.usrfiles.com/ugd/b8c837_3fbf20b3a4684a5ba762c53a39b1ad9c.pdf
    • https://static.usrfiles.com/ugd/20d83a_4d807ccf3eb74e7492da9b3a38db3bea.pdf
    • https://static.usrfiles.com/ugd/c20ea7_38acc1a962b747e283761663fd9b6093.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_off00007323.bin
fd4ae5f799ca87f591c69a9ec3fcfa990b2bed2a48a71b3134bf0428336be92a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7323 5000 bytes
font_01_sfnt_off0000841b.bin
d917eff6c6538c1f43e9576a703c44abc634e14eb751c232fc121bd519cb0704		 pdf-font-stream PDF embedded font (sfnt) at offset 0x841B 10684 bytes

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