Malicious PDF — malware analysis report

Static analysis result for SHA-256 760bda8a521e1e5b…

MALICIOUS

PDF

41.4 KB Created: 2020-08-30 00:53:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ce8c34582ea60170f66d106d5b59b6ae SHA-1: 1e135f103f94715899c284d922b994c17a37ebed SHA-256: 760bda8a521e1e5b74921288472a4d84cef66243bd779e5d9dd43dc36ff66df9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, indicating an attempt to lure the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. The embedded URLs suggest a link farm designed to distribute malicious content, likely through a phishing or scam pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.cc/wix?keyword=zupas+nutrition+facts
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/ea5d7b_9132393f3a4b4f38905c8704e3cc07ca.pdf
    • https://static.usrfiles.com/ugd/96768c_b4817ccab79946c08a603df4ae6e5254.pdf
    • https://static.usrfiles.com/ugd/d1c05f_35a66b222f634f3e9b9844b7a1a1a1b4.pdf
    • https://static.usrfiles.com/ugd/0d089b_863960567f84495886d62ab1a9b38c0c.pdf
    • https://static.usrfiles.com/ugd/b8c837_48f77f2cf4a64f738f36d47e914ca929.pdf
    • https://static.usrfiles.com/ugd/2c608b_675288c1ade545b3b53308a9b7488f4e.pdf
    • https://static.usrfiles.com/ugd/a1fb72_b34f5a74e2e54ecc923b1b5e63c4c9be.pdf
    • https://static.usrfiles.com/ugd/ea2f88_e94d4e06509b4129975851bc1a426a0c.pdf
    • https://static.usrfiles.com/ugd/3bca44_955b8deca7414b3d900d9b7d8b10e4c5.pdf
    • https://static.usrfiles.com/ugd/67e251_680e3b003f6a4c74b217df64e4ea587f.pdf
    • https://static.usrfiles.com/ugd/b8c837_0ed4e5c9e25a441da7a1e67086ae9b1a.pdf
    • https://static.usrfiles.com/ugd/b8c837_b4899b6f54ef4011b82586438c58c599.pdf
    • https://static.usrfiles.com/ugd/b8c837_2ae2582386cf4e27979301d401409196.pdf
    • https://static.usrfiles.com/ugd/b8c837_cf6d042501604a5ab710fa21e3333053.pdf
    • https://static.usrfiles.com/ugd/b8c837_69382f1ab33d466f95b1b09b3f9b78d0.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053d3.bin
67982e2b289dfecde84b85370d478eec4d99a2c2226d7bcbf4fb639c1371ae58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53D3 4936 bytes
font_01_sfnt_off000064a0.bin
414d786b459f0f5d2a731291ef1b870d88176140611ada2eab9f82aaf6e76e23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64A0 1940 bytes
font_02_sfnt_off00006dd6.bin
9cd1f06927a2cefac8ec1ca850dbb81f9aa5f515bcc1a4a83cccd0d30d22f4ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD6 13640 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.