Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbb81d6c8c2e6764…

MALICIOUS

PDF

42.8 KB Created: 2020-09-05 09:50:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47770a7aec17ae034e753ed445da35ee SHA-1: 36800f73fddd7df155ed90b987d06f19a67df99f SHA-256: fbb81d6c8c2e676439a0a5a175db01dc52dff2218bf6c3fa69513edab0cc27c2
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.me'. The document body, though heavily obfuscated, contains text related to 'Call of duty mobile beta version', suggesting a lure. The file also contains a large number of embedded links, many of which point to Shopify domains, but the primary malicious indicator is the redirector URL. No scripts were extracted from this sample.

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=call+of+duty+mobile++beta+version
    • https://static.usrfiles.com/ugd/c33f71_3c6bb428f0624455ba9b6160cfe0a1ef.pdf
    • https://static.usrfiles.com/ugd/bb3bf9_821d928fd09c41268c00df85e9520d68.pdf
    • https://static.usrfiles.com/ugd/b8c837_4afda2cb0dea4beba4f404b7957e9d4f.pdf
    • https://static.usrfiles.com/ugd/fedf23_a3bba0cbe0e7441c8f922b2d7806932b.pdf
    • https://static.usrfiles.com/ugd/b54ff4_3357657d3ea14d1aab44acd43a39eaf5.pdf
    • https://cdn.shopify.com/s/files/1/0429/5920/8604/files/wireless_communications_principles_and_practice.pdf
    • https://cdn.shopify.com/s/files/1/0467/9850/4085/files/72087043993.pdf
    • https://cdn.shopify.com/s/files/1/0448/5061/0336/files/jiketuwekojaverin.pdf
    • https://cdn.shopify.com/s/files/1/0438/8575/6568/files/xakowepidejotusam.pdf
    • https://cdn.shopify.com/s/files/1/0437/7755/6629/files/81796974357.pdf
    • https://cdn.shopify.com/s/files/1/0429/4826/4089/files/span_of_control.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_off00006935.bin
30dc55452a367d63c145c305f7ea44f35486e39f98c9c30ddfddbee0d78f4850		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6935 5260 bytes
font_01_sfnt_off00007b0e.bin
107a697a223c94437f385d605eb64a1cc5ff2039a8a25df1f135adf7faad4eb8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B0E 10424 bytes

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