Malicious PDF — malware analysis report

Static analysis result for SHA-256 99ed7db592df9935…

MALICIOUS

PDF

34.9 KB Created: 2020-09-03 00:49:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80c4ccfbe4ad4d7caadde2ebd6aa5763 SHA-1: e5b76d216eabbe2982486ec666514a46d4214fce SHA-256: 99ed7db592df9935147cea37782098d8c070ac0790b878677fe4ff346a8b2918
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF file contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though partially corrupted, contains text related to 'Bill Nye renewable energy worksheet' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a link farm heuristic further indicates a malicious intent to direct users to external resources.

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.club/wix?keyword=bill+nye+renewable+energy+worksheet
    • https://static.usrfiles.com/ugd/b8c837_8c206f1c44d043f999a4bb4ab4a159e7.pdf
    • https://static.usrfiles.com/ugd/e42ee3_eb09f381fa4846fda7af70c0282c84da.pdf
    • https://static.usrfiles.com/ugd/1b7c00_1defa17377cb416e8c82c045cdbf16d2.pdf
    • https://cdn.shopify.com/s/files/1/0431/7541/1872/files/96806595872.pdf
    • https://cdn.shopify.com/s/files/1/0437/6271/2728/files/banks_interview_questions_and_answers.pdf
    • https://static.usrfiles.com/ugd/b8c837_80b834759d2c4e9b943af6c63b8f4b64.pdf
    • https://static.usrfiles.com/ugd/b8c837_4599b1e1f34d4d9885625c493d52c647.pdf
    • https://static.usrfiles.com/ugd/d4da64_be561231db7747a799ca186593b5ebce.pdf
    • https://static.usrfiles.com/ugd/384ea4_b9862c53f1b746338c5c25b3999a3f0d.pdf
    • https://static.usrfiles.com/ugd/15d534_2b87b3afab9a4bb4aab28ee5cbd04a12.pdf
    • https://static.usrfiles.com/ugd/9cb927_6fd774a3380b41ba88b624b69bfc8c8a.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_off00004a3d.bin
be2adbbe635cb16c2bf28fc9755e96c6b54432dca629ca61f30ed07d4046f0a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A3D 5396 bytes
font_01_sfnt_off00005cad.bin
be8c73d4988f890b63d09ea5a70d719fe3c9a1163c286a0a63f2b9de2db5b58f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CAD 10064 bytes

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