PDF malware analysis — malicious · f2dbaf1a81c46567

MALICIOUS

PDF

45.7 KB Created: 2020-08-31 02:40:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: aad9c7edf875726f0e9fdbab1050573e SHA-1: 405fab280788a93b681dcfaf0046bac6827a8788 SHA-256: f2dbaf1a81c465677f3aeb4dbe469471c6c472e1351af59fe9177cb5d3fe1a00

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The primary malicious URL, 'https://ttraff.cc/wix?keyword=grow+taller+4+idiots+program+free+do', is directly linked to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains references to the same keyword found in the malicious URL, suggesting a lure. The presence of numerous links to external PDFs, many hosted on static.usrfiles.com, indicates a coordinated effort to distribute content, likely malicious, through a link farm strategy.

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.cc/wix?keyword=grow+taller+4+idiots+program+free+do
- https://static.usrfiles.com/ugd/3649d2_6a74c9a4efee403ca4ae83ed7feba1b4.pdf
- https://static.usrfiles.com/ugd/5d2cf3_2b19c47c8e55452b8baacaa4462333dc.pdf
- https://static.usrfiles.com/ugd/1a89c8_f8261b787947428f9a9ab9c833c27144.pdf
- https://static.usrfiles.com/ugd/b8c837_f56671191947460eb84ea13a712d7700.pdf
- https://static.usrfiles.com/ugd/b8c837_bab3f2cf5d8e456ba1961449a98da664.pdf
- https://static.usrfiles.com/ugd/5e81b9_11388fbe49034ed4860cfe4c26373441.pdf
- https://static.usrfiles.com/ugd/b8c837_a14133b86e6c4c48aacd8f58d137055b.pdf
- https://static.usrfiles.com/ugd/04e6f9_05b51ebf069e45039fc7f99a3a3042f7.pdf
- https://cdn.shopify.com/s/files/1/0432/5136/8104/files/video_editing_software_windows_free.pdf
- https://cdn.shopify.com/s/files/1/0439/5171/8558/files/61943564369.pdf
- https://cdn.shopify.com/s/files/1/0432/2679/2100/files/kavanorotijun.pdf
- https://cdn.shopify.com/s/files/1/0437/0409/0792/files/chyawanprash_song_songspk.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_off000066d9.bin` `890af3ada2368c270e0b35c608375835a42955eb253bbc37b578150bc435333e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66D9	5256 bytes
`font_01_sfnt_off000078e2.bin` `cfe3bdc549dee49c6984ca96c254cef14c7e3688d6a7626e46d79edc3844d850`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x78E2	10236 bytes
`font_02_sfnt_off00009bd2.bin` `9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9BD2	4324 bytes

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