PDF malware analysis — malicious · 53b229433321d2ba

MALICIOUS

PDF

45.4 KB Created: 2020-08-31 20:17:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b58ad768ca3116ac9835119aeb969940 SHA-1: 21c5c592894316b00726e246baa3b80ab463f242 SHA-256: 53b229433321d2ba6b7eb7735135cb6ba36d7c969f700c77a2d95690bd4e5307

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector. This indicates a likely phishing or malware distribution attempt via a link farm.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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=administrative+management+theory+advantages+pdf
- https://cdn.shopify.com/s/files/1/0432/7417/4622/files/kakopufefovavuxawite.pdf
- https://cdn.shopify.com/s/files/1/0429/3555/0111/files/60520440166.pdf
- https://cdn.shopify.com/s/files/1/0440/8446/1720/files/22959568154.pdf
- https://cdn.shopify.com/s/files/1/0439/1786/9211/files/18572986398.pdf
- https://cdn.shopify.com/s/files/1/0437/0405/8010/files/ankle_sprain_home_exercises.pdf
- https://static.usrfiles.com/ugd/3bca44_2f728a4bf36543bd901615ff6a77168b.pdf
- https://static.usrfiles.com/ugd/9e14ca_979367368ad84d30919777c1eaa9bfcc.pdf
- https://static.usrfiles.com/ugd/ab0441_0c054662147c4c0e906746ac9d9d5185.pdf
- https://static.usrfiles.com/ugd/850f07_f615f3b05209468d875ffe36c4293004.pdf
- https://static.usrfiles.com/ugd/db93e9_b08a6601f09540c1b5f42f472c60de07.pdf
- https://static.usrfiles.com/ugd/b8c837_1736f348234e4d3ab48b7fa687084960.pdf
- https://static.usrfiles.com/ugd/b8c837_82c0bf740d0c4bbcad856d7bcbf0050f.pdf
- https://static.usrfiles.com/ugd/b8c837_8eb1866d71f94eedb18dda8893a49f48.pdf
- https://static.usrfiles.com/ugd/516793_551f9c4d0ce24ac99567f0a6f2c0514d.pdf
- https://static.usrfiles.com/ugd/ac72e0_9aba7ccc96e9497ca799104c6a9bc65e.pdf
- https://static.usrfiles.com/ugd/4cf28d_0fc3fa60f80340d5a9807858e7818d82.pdf
- https://static.usrfiles.com/ugd/9e41f0_27c245234e3b433abec259d0a7866c94.pdf
- https://static.usrfiles.com/ugd/c83fdb_e71376e0da4545df9735ebb5196ada4f.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_off000071b8.bin` `6fd1af29f14537bba684fef9d3f59907e0bd91d99322eee6ab910d7b937d0f2b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x71B8	5572 bytes
`font_01_sfnt_off00008491.bin` `e287674d03fb010ca77972ba44bfe1a69c05a91cef5bdb6858f9c207727bf211`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8491	10372 bytes

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