Malicious PDF — malware analysis report

Static analysis result for SHA-256 f571600bb93d9c22…

MALICIOUS

PDF

71.8 KB Created: 2020-09-03 16:50:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6808da7dc4e68075e99d90aa8e287f98 SHA-1: 943b0d74103e387887780d6d673a543c7f329b47 SHA-256: f571600bb93d9c22addab70bf808c63a23067d7f05030db9d02cc71913a45b56
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of these links, https://ttraff.com/wix?keyword=bahut+pyar+karte+song++female, points to known malicious redirector infrastructure. The document body appears to be malformed or heavily obfuscated, but the presence of the malicious link is the primary indicator of compromise. The file's purpose is likely to lure users to malicious sites through this 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.com/wix?keyword=bahut+pyar+karte+song++female
    • https://static.usrfiles.com/ugd/b8c837_01fac31c07364ba190484afae6da9376.pdf
    • https://static.usrfiles.com/ugd/b8c837_52b1f7723aae4e51b8b7a0f5db87dec4.pdf
    • https://static.usrfiles.com/ugd/87b9a8_8f5ae8d26420464d815399ee8807abaa.pdf
    • https://static.usrfiles.com/ugd/4b874d_b6f1bbfbabce4a8684b560ae8f84a445.pdf
    • https://static.usrfiles.com/ugd/b85eb0_eaff6b86dc8147c68f6fd9de977f4812.pdf
    • https://static.usrfiles.com/ugd/9cb927_bb7e3b6089144955aa5e7eb86ac71967.pdf
    • https://static.usrfiles.com/ugd/de9003_c4f7cd30934d48bb9a17202dc932b0e4.pdf
    • https://cdn.shopify.com/s/files/1/0433/3446/7752/files/jujegasadoverex.pdf
    • https://cdn.shopify.com/s/files/1/0430/7202/8833/files/dulikovevumovebiramilaw.pdf
    • https://cdn.shopify.com/s/files/1/0438/2880/5789/files/tajon.pdf
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/80070522754.pdf
    • https://cdn.shopify.com/s/files/1/0440/5254/5701/files/bilanzanalyse_baetge.pdf
    • https://cdn.shopify.com/s/files/1/0436/7322/3321/files/music_sheet_for_itsy_bitsy_spider.pdf
    • https://cdn.shopify.com/s/files/1/0436/2466/1154/files/81835806341.pdf
    • https://cdn.shopify.com/s/files/1/0431/9015/7474/files/10614358073.pdf
    • https://cdn.shopify.com/s/files/1/0433/5376/8095/files/youth_football_gloves_size_guide.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_off0000d38c.bin
c42477a7b5a9db9b292943cfdca371b72c3d92d99485becee44f45e65fc072e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD38C 5528 bytes
font_01_sfnt_off0000e63b.bin
4a4295b483d2667569c2f542ac8c180921a5c58d88ac7fa7d4ae12b1b0f8fb49		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE63B 13936 bytes

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