Malicious PDF — malware analysis report

Static analysis result for SHA-256 397229366d58a2ec…

MALICIOUS

PDF

38.2 KB Created: 2020-07-29 05:42:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c5e6bad3ac2b572ecc21756a5922b69 SHA-1: 42d92915ad86567df8af61db522f70b3c48c242e SHA-256: 397229366d58a2ecbb683475891f30c6e702f45fce74d64c377b72ee08f3d392
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to 'Oxford picture dictionary audio free'. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content through seemingly legitimate channels. The file is identified as a PDF with embedded links, aligning with common phishing and redirection tactics.

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=oxford+picture+dictionary+audio+free
    • http://files.painismyguru.com/uploads/1/3/2/6/132696598/8700029.pdf
    • http://files.justkiddingtheatrecompanyinc.org/uploads/1/3/1/6/131606546/8ca666d4850.pdf
    • http://files.globalezorder.com/uploads/1/3/0/7/130776519/91a7ee78696.pdf
    • https://cdn.shopify.c
    • https://cdn.shopify.com/s/files/1/0433/0346/9221/files/puzanikimibixivo.pdf
    • https://cdn.shopify.com/s/files/1/0430/1560/2337/files/tokapagoni.pdf
    • https://cdn.shopify.com/s/files/1/0432/7289/6672/files/14825299232.pdf
    • https://cdn.shopify.com/s/files/1/0435/4719/7594/files/todekupux.pdf
    • https://cdn.shopify.com/s/files/1/0428/4848/5535/files/15651647333.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25618010541.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zebegevuda.pdf
    • https://cdn.shopify.com/s/files/1/0437/1080/8216/files/9555010418.pdf
    • https://cdn.shopify.com/s/files/1/0431/6656/4520/files/33998788901.pdf
    • https://cdn.shopify.com/s/files/1/0428/1637/2892/files/vabine.pdf
    • https://cdn.shopify.com/s/files/1/0433/0671/3253/files/xinobaselezugi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0813/1233/files/45142456048.pdf
    • https://cdn.shopify.com/s/files/1/0433/9938/1157/files/rigupafub.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_off00005939.bin
d49c51946dad29eaa36141641add7e90ef125bcd537e3c196fe25dd50b0a2425		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5939 5016 bytes
font_01_sfnt_off00006a64.bin
6d37ce108fb07c0d4a411a7f6d94b20c6d3accc8aa280be076c836e2644ad032		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A64 9784 bytes

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