Malicious PDF — malware analysis report

Static analysis result for SHA-256 f969ab0b360d67be…

MALICIOUS

PDF

53.0 KB Created: 2020-09-09 17:45:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ef9e8c4ccf6215fb9360538320eeed5 SHA-1: bfe07e8f4dba45b75614aa71cb227d46cf4e789e SHA-256: f969ab0b360d67bea9c20f1e34970732bf394292b62e639cdf8bcf4c9cc12baf
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific redirector URL that is flagged as malicious. The document body text, though heavily obfuscated, contains the phrase 'cissp requirements' and the malicious URL, suggesting a lure for users seeking certification information. The presence of a malicious redirector indicates an attempt to lead the user to a harmful site.

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.link/wix?keyword=certified+information+systems+security+professional%2528+cissp+requirements
    • http://pijin.brijcommunity.org/uploads/1/3/2/3/132303354/mixawav_lunikufazujakoz_nobikok_segipegaxesol.pdf
    • https://static.usrfiles.com/ugd/d2b720_4a1bd36363d34a5e8b483705d38aaec2.pdf
    • https://static.usrfiles.com/ugd/b8c837_85635d7466d743ad8e7bf55c2c99e269.pdf
    • https://static.usrfiles.com/ugd/762c1a_2bb83b8cef40471b86c8c27084d076b5.pdf
    • https://static.usrfiles.com/ugd/a86d68_3f515d1376cf4b5b8df09ba7dfd50cf4.pdf
    • https://static.usrfiles.com/ugd/a86d68_91184d4425ce42b796ab93489702ae97.pdf
    • https://static.usrfiles.com/ugd/81ef4b_71c573e0c05f47bb8385b5d6488fa6e7.pdf
    • https://static.usrfiles.com/ugd/b8c837_a4a1e0df20a64ef7af329f888e2a8ee7.pdf
    • https://static.usrfiles.com/ugd/f103bb_a1da3065d14d4ecc93a0f69d004974e5.pdf
    • https://static.usrfiles.com/ugd/dcf311_29cf26ff80ed48a6a4f879320a2a490c.pdf
    • https://static.usrfiles.com/ugd/6da380_ceff8826d2f2421f8c5989452c224f1a.pdf
    • https://cdn.shopify.com/s/files/1/0432/5359/6310/files/gigewugamu.pdf
    • https://cdn.shopify.com/s/files/1/0439/3867/6894/files/teacher_job_application_format_in_gujarati.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_off000089fe.bin
28281ba0bfb28907e35a70c3c76b5b26fb4c3919a9b0be10877349e6bf55b14d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89FE 5512 bytes
font_01_sfnt_off00009cb0.bin
e4707aef2d03a9435a78c5d4600c7450227addbd4964d22ccbdd5cc5015c9ef5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CB0 13108 bytes

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