Malicious PDF — malware analysis report

Static analysis result for SHA-256 94abd01983b2bbe3…

MALICIOUS

PDF

50.4 KB Created: 2020-08-30 03:31:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 557a834151a4e2635aed557e6beafbd8 SHA-1: f55fb41819217c8c0a7bac43fa22c97ed9efb450 SHA-256: 94abd01983b2bbe3fd9b5cada31bcaad5f02cb34b3456db620f42ba2fe6728ec
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one identified as a malicious redirector. The document body is heavily obfuscated but contains the same malicious redirector URL and numerous links to external PDFs hosted on static.usrfiles.com. This suggests a campaign focused on SEO manipulation or redirecting 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.cc/wix?keyword=east+meets+west+yang+liu
    • https://static.usrfiles.com/ugd/e3834b_d43b9d72a22f4b1aab18cf727348924d.pdf
    • https://static.usrfiles.com/ugd/9757e7_12d992e50af9425f929f5708c7b5dbc3.pdf
    • https://static.usrfiles.com/ugd/1be480_51a6491715ca4bcdb59fcaa52f5a6eab.pdf
    • https://static.usrfiles.com/ugd/5cf23b_a52b2908a294455bb92d0e5324814dd5.pdf
    • https://static.usrfiles.com/ugd/191a6d_a8023d2d51c249ceabd1343dfe38761d.pdf
    • https://static.usrfiles.com/ugd/dd4472_89f19546559e4aada4091803e32a77ff.pdf
    • https://static.usrfiles.com/ugd/d55797_c1ce244d373b44b7be1e59e864c1d10a.pdf
    • https://static.usrfiles.com/ugd/1c8c6c_644cce46b9eb4f9489126321e86d9a56.pdf
    • https://cdn.shopify.com/s/files/1/0436/9694/7353/files/xogesipiseneduzekod.pdf
    • https://cdn.shopify.com/s/files/1/0432/3350/9535/files/heine_borel_theorem_proof.pdf
    • https://static.usrfiles.com/ugd/b85eb0_f352102d3c6e42d0877652a70c55a6e5.pdf
    • https://static.usrfiles.com/ugd/b8c837_d49cddcac9fe473ba4c0d60ba5c2a61f.pdf
    • https://static.usrfiles.com/ugd/b7306e_6c9fbae5643941a3bc99e8914d7cd7b3.pdf
    • https://static.usrfiles.com/ugd/b8c837_fb53133584154903b1f367876c521722.pdf
    • https://static.usrfiles.com/ugd/affb4a_3479b469203d48b2bae7be51a09c9de5.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_off00007d70.bin
b7587d6a87b01e26029c53e46190e2baae75b361630ee3481d3e82ffbfe701ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D70 5060 bytes
font_01_sfnt_off00008ead.bin
d64340b15287c056ecc73f7633c35ed589b75f78d9041c43f06e2711d127cdd4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EAD 2284 bytes
font_02_sfnt_off000098ec.bin
458542af2ac7860bd0368c52be81033b3457d793a768afbce106ddb2db7aa201		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98EC 10272 bytes

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