Malicious PDF — malware analysis report

Static analysis result for SHA-256 24cbcfa337179c6b…

MALICIOUS

PDF

36.9 KB Created: 2020-09-06 00:18:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6bd6e5d2188c1341c49801eb5e1ccfc4 SHA-1: c0c2d64925756c2924460433ebd1a291b56d2f23 SHA-256: 24cbcfa337179c6b6c1a7d0f15a78cafcd9becd3cb5da29b54310f207ac05d00
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a malicious redirector link. The document body, though heavily obfuscated, contains the same URL. This URL likely serves as the initial lure to a malicious site. The file also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic to increase visibility of the malicious redirector.

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.me/wix?keyword=kingdoms+and+castles+witch+guide
    • https://static.usrfiles.com/ugd/d01287_298f24b12c934f7f8eb39740feba4c4e.pdf
    • https://static.usrfiles.com/ugd/bcfc12_8bd0e54cced048a19b3a1e8b0dde7014.pdf
    • https://static.usrfiles.com/ugd/c3548c_804248b4b8e94307920c6ab877a80dc5.pdf
    • https://cdn.shopify.com/s/files/1/0438/1625/5645/files/fisiologi_metabolisme_bilirubin.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89120948070.pdf
    • https://cdn.shopify.com/s/files/1/0435/6558/0437/files/jabivugajuge.pdf
    • https://static.usrfiles.com/ugd/89c6ad_82289f1e0b1b4abaa7e8aa168bb38de7.pdf
    • https://static.usrfiles.com/ugd/41a0b6_bc232007843d44cca8ea58c4c9850ddd.pdf
    • https://static.usrfiles.com/ugd/dc8a8e_f213df647dbe4357bfa714107d53c945.pdf
    • https://cdn.shopify.com/s/files/1/0463/0672/1957/files/57936242786.pdf
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/61462947007.pdf
    • https://cdn.shopify.com/s/files/1/0428/6103/5686/files/pintura_surrealista.pdf
    • https://cdn.shopify.com/s/files/1/0428/6827/7415/files/the_intentional_fallacy.pdf
    • https://cdn.shopify.com/s/files/1/0429/8289/9871/files/lobedigolip.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004640.bin
a4102cce121a256c56824dbca79206c8bfc82fcd86d33d5d5e1879e59cdb008d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4640 5200 bytes
font_01_sfnt_off000057d6.bin
8822cfd96e46d9763c8895a1790e8694488a0773382e1fc929db6794b6cc4a96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57D6 9624 bytes
font_02_sfnt_off000078af.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78AF 4324 bytes

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