PDF malware analysis — malicious · bbd7cdb6a083ed21

MALICIOUS

PDF

51.5 KB Created: 2020-09-02 20:04:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9a2fd58cc279bbeb7e70a6a1ca0dce39 SHA-1: 65266cf838ec8558520effb50a37125b432e3d1c SHA-256: bbd7cdb6a083ed21741bdd47c27f55ffa1d9296cccd9f91d46dc8046164e17c1

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=android+studio+sdk+location+windows'. Additionally, a PDF link farm heuristic indicates the document is designed to host numerous external links. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the same URL, reinforcing the lure.

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=android+studio+sdk+location+windows
- https://static.usrfiles.com/ugd/b8c837_b1ffb517261f4ccfa867406991f5cb14.pdf
- https://static.usrfiles.com/ugd/80c1db_895f7d075467480ba94a2d9cbfbd6f59.pdf
- https://static.usrfiles.com/ugd/a76634_1dd6dee9718441c4be2089d007725d34.pdf
- https://static.usrfiles.com/ugd/b8c837_98fc5aa7399b4310be49e70d6ba902a8.pdf
- https://static.usrfiles.com/ugd/6f7357_faee4f53199e41638d57e2529c0a3b0d.pdf
- https://static.usrfiles.com/ugd/4b68be_5c0381ddc4884e46b5cf1841fd6a73bb.pdf
- https://static.usrfiles.com/ugd/338562_7e1d171452294559b33e61f95c1bfe02.pdf
- https://static.usrfiles.com/ugd/21a131_3b3c45fe4dd1461e92d49d29eb089971.pdf
- https://static.usrfiles.com/ugd/724bd4_6c1dfda8b4a14abfa63d0dcfa58294b8.pdf
- https://cdn.shopify.com/s/files/1/0431/7829/5450/files/91382029405.pdf
- https://cdn.shopify.com/s/files/1/0431/8684/7905/files/65560236403.pdf
- https://cdn.shopify.com/s/files/1/0431/2412/9952/files/mother_3_fan_translation_rom.pdf
- https://cdn.shopify.com/s/files/1/0432/6604/8165/files/fagadafide.pdf
- https://cdn.shopify.com/s/files/1/0434/9945/4629/files/45394180249.pdf
- https://static.usrfiles.com/ugd/f96b02_9f507d95519c4acb81b680e3d5d1162d.pdf
- https://static.usrfiles.com/ugd/b8c837_257ff7cb4bf341fd9cb2c9f079d40954.pdf
- https://static.usrfiles.com/ugd/7e6083_5230115ede3e4d3f9a227b0c0c2ee78e.pdf
- https://static.usrfiles.com/ugd/b8c837_7af8bd65cb784c87af0e8e52cf512c72.pdf
- https://static.usrfiles.com/ugd/a2ebd8_b6f04124c7574452a37c9ca830947989.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_off00008adb.bin` `e8e609b460bf6cef15c7a1c510842f2fbd827eb576fda4e0d86aaecb435a378f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8ADB	5080 bytes
`font_01_sfnt_off00009c46.bin` `1d6a270f6391b8092654ab26001781ff24111bc6c442884fdfa26dbabd3a3578`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9C46	10560 bytes

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