Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e14db3d5b0b1aea…

MALICIOUS

PDF

45.0 KB Created: 2020-08-30 10:18:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b248022620f185b8f99a60a323e229a SHA-1: 61f05ac3dfe56e3da844f59bef344e32d4fc828d SHA-256: 8e14db3d5b0b1aea33170f5b4c44821a9d61d379c19bd90b8b976fe42fc55564
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 PDF link farm. One of these links, 'https://ttraff.ru/wix?keyword=antutu+benchmark+ios+vs+android', points to known malicious redirector infrastructure. The document body appears to be obfuscated or corrupted, but the presence of the malicious URL and the link farm heuristic strongly suggest a malicious intent, likely related to SEO manipulation or user redirection 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.ru/wix?keyword=antutu+benchmark+ios+vs+android
    • https://static.usrfiles.com/ugd/067ecb_e3651e4b8a4b4e96b8d9c102a0439eb0.pdf
    • https://static.usrfiles.com/ugd/b8c837_fdf5f146ca094003854c4e8304bba7de.pdf
    • https://static.usrfiles.com/ugd/b8c837_d7d436a990e44393aaac78d2bab903c7.pdf
    • https://static.usrfiles.com/ugd/585b1d_6c664e5b65354b0a96fb2e9a59f9020f.pdf
    • https://static.usrfiles.com/ugd/b8c837_e564486daba642e488508a319e5cdba4.pdf
    • https://static.usrfiles.com/ugd/b8c837_cde69cece01944fc9a72117725dfb31a.pdf
    • https://static.usrfiles.com/ugd/db1da1_43073eee95f741fd92b863873caf8a8c.pdf
    • https://static.usrfiles.com/ugd/b8c837_fb835e4e5b2b4850a9dce70c08322263.pdf
    • https://static.usrfiles.com/ugd/7598fa_884f2de12a5d4722aed25c2ef6dcc572.pdf
    • https://static.usrfiles.com/ugd/834936_362e86b8236f4786887d5d2e08be1e00.pdf
    • https://static.usrfiles.com/ugd/a107db_7ba909a646854779854c04ba40149308.pdf
    • https://static.usrfiles.com/ugd/a31856_a87ed4be2d344ca48a9e040a50ab86ce.pdf
    • https://static.usrfiles.com/ugd/b8c837_06726444992e4d47ac4fef5d33b314e5.pdf
    • https://cdn.shopify.com/s/files/1/0428/9763/7539/files/583574590.pdf
    • https://cdn.shopify.com/s/files/1/0433/6893/9672/files/jodamedetixoliderix.pdf
    • https://cdn.shopify.com/s/files/1/0431/1787/1266/files/bela_bartok_mikrokosmos_vol_1.pdf
    • https://cdn.shopify.com/s/files/1/0434/7248/6564/files/1368222483.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_off000063ec.bin
bbd89d96c88d176f367365ade9d5e5015590b2712f179ec4c53c3d467408392b
pdf-font-stream PDF embedded font (sfnt) at offset 0x63EC 5280 bytes
font_01_sfnt_off000075a4.bin
61d8a4afa2843eabfb2e5f99f1935a6074ef1517be15b0179323d260e89b55bc
pdf-font-stream PDF embedded font (sfnt) at offset 0x75A4 10316 bytes
font_02_sfnt_off000098f3.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x98F3 4324 bytes