PDF malware analysis — malicious · 22440824e65e3adc

MALICIOUS

PDF

42.9 KB Created: 2020-08-29 03:03:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 71c3f4574533789e77d6c3294af57d62 SHA-1: 8df1a6a243809ae716cc3b4f9d7b34f635b6729e SHA-256: 22440824e65e3adc8589a42a88a3d09263fc3518a1bb5cdb5176c53f143cf063

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, which points to a URL designed to lure users with a search query for sheet music. This URL is likely part of a phishing or scam campaign. The document body, though heavily obfuscated, contains the same URL and references to sheet music, reinforcing the lure. The file also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, likely to improve search engine ranking for malicious 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.cc/wix?keyword=benedictus+karl+jenkins+sheet+music+violin
- https://static.usrfiles.com/ugd/b8c837_d47b968410ec4bdb971c3ae1677395bc.pdf
- https://static.usrfiles.com/ugd/b8c837_0b872d4978ec428f9c84fd9f251eb11b.pdf
- https://static.usrfiles.com/ugd/b8c837_1b9d70110b3948df8272df390e36050c.pdf
- https://static.usrfiles.com/ugd/b8c837_d72b41df5afd49369f67247cd0d2f3fa.pdf
- https://static.usrfiles.com/ugd/b8c837_c8c1b7c2300c4639b99ccf2f4fdb7625.pdf
- https://static.usrfiles.com/ugd/b8c837_44b0347737ab4394b3e02defa38c2303.pdf
- https://static.usrfiles.com/ugd/b8c837_7e9c544e30494d0087695009f29d1a58.pdf
- https://static.usrfiles.com/ugd/b8c837_7ac03c2346a04cdea2a4c90124fc6950.pdf
- https://static.usrfiles.com/ugd/b8c837_c4ad8f2148d84b52aa9d9178b43073df.pdf
- https://static.usrfiles.com/ugd/b8c837_7f1c85de66dd4687b694c5f26e3a0ccd.pdf
- https://static.usrfiles.com/ugd/b8c837_56532c01978c4ab9bb17dd8e5fd98025.pdf
- https://static.usrfiles.com/ugd/b8c837_65578ffde2174e11a61e8ae217c79e0e.pdf
- https://static.usrfiles.com/ugd/b8c837_684aa52f1b41443ca46dc2677abb7ac2.pdf
- https://static.usrfiles.com/ugd/b8c837_fffc3add1a194ecb8ad92f23bd26b7d5.pdf
- https://static.usrfiles.com/ugd/b8c837_d96dc23e41924441aee5257b99493eda.pdf
- https://static.usrfiles.com/ugd/b8c837_f3d4da54201b4fa1be94a49599f934fc.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_off000068bd.bin` `023e3615a151b56fd690e699e244e1981e5ab20f852969358cdc4e1a47178f87`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x68BD	5428 bytes
`font_01_sfnt_off00007b0d.bin` `b53ca819b42ec726eaeb7445c5f2ed4875f7515d51361622b7f749b8ee874558`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7B0D	10392 bytes

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