PDF malware analysis — malicious · ac79c9749065d4c9

MALICIOUS

PDF

46.5 KB Created: 2020-09-01 09:02:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 5151c6f3deaaba2fbfe48126cb22bb40 SHA-1: e5b567b53aff33ba63cac7dd234c8c64075a7a3d SHA-256: ac79c9749065d4c9dafda10ab862bab4fbb2dab4f123079db0893e752f0742be

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=i%2527+m+coming+home+ringtone+free'. This URL is presented within the document body, disguised as a search result for free ringtones. The file also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, many hosted on 'static.usrfiles.com'. The primary malicious link is the most critical IOC, as it is designed to redirect users to potentially harmful content.

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.me/wix?keyword=i%2527+m+coming+home+ringtone+free
- https://static.usrfiles.com/ugd/db1da1_fabfd9935dd94088bdd3917edeed8175.pdf
- https://static.usrfiles.com/ugd/79e0dc_e65aab965f07401483f8394e59b936db.pdf
- https://static.usrfiles.com/ugd/078c79_988d1a8beaf04ab3b6d31cbc442958f6.pdf
- https://static.usrfiles.com/ugd/b910ae_5eed31ee173b4c749145c0e4c9d6d6c6.pdf
- https://static.usrfiles.com/ugd/b910ae_1f5be5c7465a4e12b188b89139955e9d.pdf
- https://static.usrfiles.com/ugd/b8c837_d92aa52cccf84597ad2fa646c5c5e406.pdf
- https://static.usrfiles.com/ugd/b8c837_dde8d2c32830414096a45273f73a64fa.pdf
- https://static.usrfiles.com/ugd/516574_e01124e8f54745a1a75b7722170f4532.pdf
- https://static.usrfiles.com/ugd/b8c837_c89056227e6f45a3a5d8eed9a9e47951.pdf
- https://static.usrfiles.com/ugd/b8c837_62a5d968ecc846639d3de5cc1a6faf2a.pdf
- https://static.usrfiles.com/ugd/784815_c1f36074c7ac44fd8555df42825cd4e4.pdf
- https://static.usrfiles.com/ugd/5be868_16a3dca51ac740c0ab079407375cd9d1.pdf
- https://static.usrfiles.com/ugd/de3d83_f9856ddbd9284cc090bd8a2fc0cfa45d.pdf
- https://static.usrfiles.com/ugd/b8c837_dfc9e532df724280a6d602c5f11ca9ee.pdf
- https://static.usrfiles.com/ugd/f09a9d_e2d8a11b6e38414cbc304d30a56251cf.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00006c99.bin` `53f8ac05ee222d086da89693f317aa7c26ca5b0aef517681de35251a40a2b297`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6C99	4632 bytes
`font_01_sfnt_off00007c21.bin` `7cfffcf20219ee08fd4001de13c3c3e6ef1ad8ffd1931c650c1d25123062ad0a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7C21	10076 bytes
`font_02_sfnt_off00009e97.bin` `1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9E97	4324 bytes

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