Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dadd63677bd20bd…

MALICIOUS

PDF

68.4 KB Created: 2020-09-08 22:52:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 833f929201438f8770fc9db8c5b0058e SHA-1: 4b4374a169056d76bc87c690ae8a78b6626bd10b SHA-256: 7dadd63677bd20bde3cfad4568aa1cf789f8b2d5370b616597c8374a4482ef20
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, with a critical heuristic firing for a PDF link farm. One of these links, 'https://ttraff.club/wix?keyword=ain%2527+t+nobody+chaka+khan', is flagged as malicious. The document body appears to be heavily obfuscated or corrupted, but the presence of numerous external links suggests a malicious intent, possibly for SEO manipulation or to redirect users to malicious sites.

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.club/wix?keyword=ain%2527+t+nobody+chaka+khan
    • https://cdn.shopify.com/s/files/1/0437/3174/6967/files/chapter_25_cooking_methods_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/5106/5243/files/96864114147.pdf
    • https://cdn.shopify.com/s/files/1/0462/7221/7237/files/intuitive_eating_workbook_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pobilimej.pdf
    • https://static.usrfiles.com/ugd/bf57b5_ecc8710ee4c64b05897d63c7330e525b.pdf
    • https://static.usrfiles.com/ugd/b11f6d_7dcd77885e8e4ab48b3ad06d69c5e79a.pdf
    • https://static.usrfiles.com/ugd/f34323_0e19c92f548447bda0cc2dda90172b04.pdf
    • https://static.usrfiles.com/ugd/a44510_8ded9382cbac41d79c67439317a89796.pdf
    • https://static.usrfiles.com/ugd/66f7a0_d67cb623c23b433c95a32e9a6979f0e6.pdf
    • https://cdn.shopify.com/s/files/1/0434/5823/2473/files/dance_competition_hub.pdf
    • https://cdn.shopify.com/s/files/1/0433/7719/7221/files/electronics_formula_sheet.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_off0000ad06.bin
96ea371b1fbfb4d8c62931537a122bfee7c28a70ebcff9e58b83796f9b3ddf6f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD06 5052 bytes
font_01_sfnt_off0000be41.bin
f68c91abd104efdf1c9d970c82b3e04a119ab573a9de3c46f0f28b9d5b270dbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBE41 16192 bytes
font_02_sfnt_off0000ef8e.bin
33ac7a41d905288828211d5f6cc5757e13e01f0c6fb970168ed2790c047a0ece		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF8E 16124 bytes

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