Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2c9ed046f51cf69…

MALICIOUS

PDF

57.1 KB Created: 2020-08-29 01:03:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9eb71699acc53a4c93a5da5f9bdf6540 SHA-1: 5e63aeb50a32f2763a518d6d482051936fa3e407 SHA-256: f2c9ed046f51cf6991be859abeaca0b91e1bceb6c99c97b7cea2163244f10a03
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=curso+tarot+gratis+pdf'. Additionally, it exhibits a PDF link farm heuristic, indicating a large number of outbound links, with 'https://static.usrfiles.com/ugd/b8c837_0a8ca4a5a50c47028ce5fe13b746f482.pdf' being the first listed. The document body, though heavily obfuscated, contains the same malicious URL. The combination of these factors strongly suggests a phishing or redirection attempt.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=curso+tarot+gratis+pdf
    • https://static.usrfiles.com/ugd/b8c837_0a8ca4a5a50c47028ce5fe13b746f482.pdf
    • https://static.usrfiles.com/ugd/b8c837_0a108dee74664d858c4f742c367048a4.pdf
    • https://static.usrfiles.com/ugd/b8c837_536bd763bcd1499d97446ca71d119e90.pdf
    • https://static.usrfiles.com/ugd/b8c837_c133c3002dec4f17b48e774530e43a02.pdf
    • https://static.usrfiles.com/ugd/b8c837_5bde45607d7d45798d5c14c2ef08990e.pdf
    • https://static.usrfiles.com/ugd/b8c837_189295f9b67f465890b07b2c896eb7bb.pdf
    • https://cdn.shopify.com/s/files/1/0437/7791/7085/files/adobe_reader_free_download_old_version.pdf
    • https://cdn.shopify.com/s/files/1/0435/6784/1443/files/45169242768.pdf
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/39448512878.pdf
    • https://static.usrfiles.com/ugd/b8c837_0a32f71df2c1490b8a6deff2a4a70521.pdf
    • https://static.usrfiles.com/ugd/b8c837_ef2b933a735040d496d20ab50877c2cd.pdf
    • https://static.usrfiles.com/ugd/b8c837_1f7deda28ff6422481ffdd6e65b38894.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_off0000a305.bin
b34a276960b859474dd477a6df92317c7f5d5f4c7e0585dfa24165d3a2c26abe		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA305 5084 bytes
font_01_sfnt_off0000b465.bin
3e14aff8611450e300c1608f02c4a3f3f4b3596a5be3412392276bb41aa8956f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB465 10472 bytes

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