Malicious PDF — malware analysis report

Static analysis result for SHA-256 c24f10948d0b64d4…

MALICIOUS

PDF

35.0 KB Created: 2020-09-01 00:23:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67da444d1e1c512ea12a678ab5d86b27 SHA-1: 03eab8d42c9bc0eb57778793f5bfa03ac7f5b1ce SHA-256: c24f10948d0b64d426944f2690430f5728e57fe06d8f67c9e703bb8504e7962e
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a datasheet title and a URL, suggesting a lure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the presence of a link to known malicious infrastructure, and PDF_SEO_LINK_FARM indicates a large number of external links, likely for SEO manipulation or to obscure the malicious destination. The primary malicious IOC is the redirector URL.

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.com/pify?keyword=alcatel+8001+datasheet
    • https://static.usrfiles.com/ugd/38eac1_786f4667925244b5bd2a51612e75b615.pdf
    • https://static.usrfiles.com/ugd/a4d998_405c0a6685274f51947719e0b2dfe5d5.pdf
    • https://static.usrfiles.com/ugd/b8c837_308bbcb111da4e6ebd05f5c33c41ef21.pdf
    • https://static.usrfiles.com/ugd/ee9d3f_5834db7ed55e4f2da47ef64f15e52a4d.pdf
    • https://static.usrfiles.com/ugd/2ca09c_e5f76339b9c844a4ba27e1789bf6c89a.pdf
    • https://static.usrfiles.com/ugd/fb5067_0065f4a3da93463c85a07032c3e56045.pdf
    • https://static.usrfiles.com/ugd/85d67f_4e315da39b12415d8f8fdba3bb9b5533.pdf
    • https://static.usrfiles.com/ugd/865d50_26d625e084724193bbcccb6221b9b95f.pdf
    • https://cdn.shopify.com/s/files/1/0431/6433/6290/files/barefoot_investor_for_families.pdf
    • https://cdn.shopify.com/s/files/1/0429/8643/8807/files/71888869799.pdf
    • https://static.usrfiles.com/ugd/b8c837_591654e411f94a9eab90d94087a75b17.pdf
    • https://static.usrfiles.com/ugd/d9d1f5_1c122f3d265b4e6689026f475a297c88.pdf
    • https://static.usrfiles.com/ugd/3649d2_05c8cf20a9a44703980d9c2f56555b78.pdf
    • https://static.usrfiles.com/ugd/b8c837_31abda09386c4690a9519d8b20c6ffb2.pdf
    • https://static.usrfiles.com/ugd/b8c837_8479371d19b44e2cbf5b22b5ffaed65b.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_off00004b06.bin
013a59df71a9f99b0a9dba65b44dfe27db05f366d47fcbde369d44695e1f5518		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B06 5308 bytes
font_01_sfnt_off00005d15.bin
2169500a183848bef01e1a2b7641fb480adc6d3fc3e7703d85884419c521c728		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D15 10084 bytes

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