Malicious PDF — malware analysis report

Static analysis result for SHA-256 9af78aeea906d65f…

MALICIOUS

PDF

33.5 KB Created: 2020-08-29 00:12:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80d7816ee0c72c4277d846087e92d169 SHA-1: b17180c287298859a385ba5eb7b4f5a3e3abd927 SHA-256: 9af78aeea906d65fc04ad6630edff8a1f820eabe40b5a6d38e2e64fc40303193
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.cc/wix?keyword=mayores+lyrics+in+english', points to a known malicious redirector. The document body contains garbled text but includes the same malicious URL, suggesting an attempt to disguise or embed the malicious link within otherwise unreadable content. The primary attack pattern appears to be luring users to malicious infrastructure through a deceptive 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.cc/wix?keyword=mayores+lyrics+in+english
    • https://cdn.shopify.com/s/files/1/0428/5480/9756/files/undertale_games_online_unblocked.pdf
    • https://cdn.shopify.com/s/files/1/0429/2735/8115/files/close_up_english_in_use_b2_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/4000/5541/files/free_bullet_journal_printables_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/0131/4454/files/megufiwodenodese.pdf
    • https://cdn.shopify.com/s/files/1/0433/4705/0661/files/vuzinejosozujopada.pdf
    • https://static.usrfiles.com/ugd/b8c837_b798244337974331a7ca0fb43a6ad61f.pdf
    • https://static.usrfiles.com/ugd/b8c837_189ad59eae1f4411ac9b7abda0c0600d.pdf
    • https://static.usrfiles.com/ugd/b8c837_680e05bdc0c94673a999faa07cd065ff.pdf
    • https://static.usrfiles.com/ugd/b8c837_7caae7fb7eea4064ac077435fc87f62d.pdf
    • https://static.usrfiles.com/ugd/b8c837_e24ce86c8fa04a588c867cc4fe658ea9.pdf
    • https://static.usrfiles.com/ugd/b8c837_1a56a2e8c17b4000b26c132eab328a95.pdf
    • https://static.usrfiles.com/ugd/b8c837_5c7005fbcfba4d9e8714414bc9b18814.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_off000047a1.bin
85cb947e8bf94861b2c2760b416404bf9e844c4d8415668fbe55d2df0fcdaa14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47A1 5168 bytes
font_01_sfnt_off0000593a.bin
6449b902df6912aaf60c4a554d0632065fbb0a6848367e31a06625e35a126005		 pdf-font-stream PDF embedded font (sfnt) at offset 0x593A 9488 bytes

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