Malicious PDF — malware analysis report

Static analysis result for SHA-256 79264aba0ca80a3e…

MALICIOUS

PDF

40.5 KB Created: 2020-08-31 11:25:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 425a50a61fed641c98c09bbec6250473 SHA-1: 68f81a7465e0abaf6a68af24fe327d767db68c5e SHA-256: 79264aba0ca80a3efb196b264657a676a139b3ccd6f7aa05071babc739c66243
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm designed to redirect users. One of the primary links, 'https://ttraff.cc/wix?keyword=aprende+a+dibujar+con+el+lado+derech', is flagged as malicious. The document body, though heavily obfuscated, contains references to this URL and other benign-looking PDF links, suggesting a social engineering lure to drive traffic to malicious infrastructure.

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.cc/wix?keyword=aprende+a+dibujar+con+el+lado+derech
    • https://static.usrfiles.com/ugd/07e02c_e412f98ee1c549de88362570880265ca.pdf
    • https://static.usrfiles.com/ugd/77eba6_9d5362ee4cd84b4c9beb0c27e3ec2fd0.pdf
    • https://static.usrfiles.com/ugd/b8c837_a27ceee5ee714d4b8ebded0024d36048.pdf
    • https://static.usrfiles.com/ugd/9c0842_78b32cc2ac284965b8b749d5488de175.pdf
    • https://static.usrfiles.com/ugd/02beb7_509bc784b3f24e9bb850deaec6075db1.pdf
    • https://static.usrfiles.com/ugd/9e41f0_6f224a11a3a74ea3b18a66a2d293090d.pdf
    • https://static.usrfiles.com/ugd/b8c837_bb3e30a7953644719d33b12a18250711.pdf
    • https://static.usrfiles.com/ugd/48f461_ec4beeee0cec42878e0e11ab0ab2844c.pdf
    • https://static.usrfiles.com/ugd/cf14a4_f2819cd47e864b0b8a4a53a749e40127.pdf
    • https://static.usrfiles.com/ugd/a8ca0f_227015ca992f42fb84d30725e09fca56.pdf
    • https://cdn.shopify.com/s/files/1/0431/9212/3560/files/58358725364.pdf
    • https://cdn.shopify.com/s/files/1/0431/3058/5250/files/65438755456.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_off00005eab.bin
da858d533606834142b748f699d58247138ed88b46111cfbbdf0a661a7063a84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EAB 5188 bytes
font_01_sfnt_off00007032.bin
d72067504e67c0a821bacc1a3a0475df9ab5866f8010d9d98566ee13e196a472		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7032 10948 bytes

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