PDF malware analysis — malicious · 367c62ccb6f0e3d6

MALICIOUS

PDF

38.6 KB Created: 2020-08-30 19:37:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 62b846e8381f9557853df2aff0465a66 SHA-1: 717c92486a3ae1b2e555a4577b6c643520120c84 SHA-256: 367c62ccb6f0e3d62a1e0e890fdba16f6181b7d11b1e218fe55994607190d1f2

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/wix?keyword=black+queer+studies+a+critical+anthology+pdf'. This indicates an attempt to redirect the user to malicious infrastructure. The document body, though heavily obfuscated, also contains this URL and numerous other links to PDF files hosted on 'static.usrfiles.com', suggesting a link farm or redirection strategy. 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/wix?keyword=black+queer+studies+a+critical+anthology+pdf
- https://static.usrfiles.com/ugd/cc03df_0993ec2740f5424abd44e856e2ab7722.pdf
- https://static.usrfiles.com/ugd/cfbfd2_2a5126763cef4e0db76e8edfe2390bbb.pdf
- https://static.usrfiles.com/ugd/b8c837_7c4e3d1d74f947e1ae4d67666191a89f.pdf
- https://static.usrfiles.com/ugd/affaa6_8ea504ad5fb643f1ac3f1b71cb43a6ae.pdf
- https://static.usrfiles.com/ugd/b8c837_947eab0c829a4592a34ce21e14ef09e8.pdf
- https://static.usrfiles.com/ugd/b8c837_f146a7b574214dc48fe5ebdc21903352.pdf
- https://static.usrfiles.com/ugd/067ecb_98cf75c4ac0843dd9799308d11f9bf3e.pdf
- https://static.usrfiles.com/ugd/cac9e4_2226b8dc04ee4dbbb3c1db6684a97294.pdf
- https://static.usrfiles.com/ugd/79cb75_f3709566ddfa4942a27ad4c5d98157b7.pdf
- https://static.usrfiles.com/ugd/b8c837_e11ca8e0172f4fe2b578c08cd5c2c96b.pdf
- https://static.usrfiles.com/ugd/b8c837_681f2cc7fc5c4ddc8bff164975e67588.pdf
- https://static.usrfiles.com/ugd/1e32c2_5b2286ad906b491c88d3288e0f2c8dbc.pdf
- https://static.usrfiles.com/ugd/95089d_1df05b030d3b4aee871a4e98c5aea11d.pdf
- https://static.usrfiles.com/ugd/4d400c_77dcd26d3838488298025972ddbe6506.pdf
- https://static.usrfiles.com/ugd/b8c837_59de6ac12912479a83686689179d656e.pdf
- https://static.usrfiles.com/ugd/7dd30d_da933a59b6394310b10c7630b5967ec7.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.

Filename	Kind	Source	Size
`font_00_sfnt_off000056df.bin` `d70b72e45e78e6efc98ba75b4dc4f51068812c1742c079ad31b403e3bf5c901e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x56DF	5756 bytes
`font_01_sfnt_off00006a7c.bin` `0fa3092134646923aca687ec0b6d5acb1500a4ec76f8fc2a16d676515e87be83`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6A7C	10244 bytes

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