PDF malware analysis — malicious · 8bff9feb4bc2bb7f

MALICIOUS

PDF

68.0 KB Created: 2020-08-29 18:52:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a6c5c45b5d521a477ef869c55b3f62c4 SHA-1: efecd11e20a549d701cd6a231db91bf66497874f SHA-256: 8bff9feb4bc2bb7f888cbade63fa28ced74567d8db18003b5f92544af91cbda2

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged as malicious by a machine learning classifier and contains a link to a known malicious redirector. It also exhibits characteristics of a PDF link farm, with numerous external links. The embedded document body text, though heavily obfuscated, contains the malicious URL, suggesting the document's primary purpose is to lure users to this external resource.

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/wix?keyword=dynasty+warriors+5+special+psp+iso
- https://static.usrfiles.com/ugd/b8c837_a0e00486f5c64b769699da40d123d8b1.pdf
- https://static.usrfiles.com/ugd/b8c837_abb19d5022f14b53acc4175ae0f043c4.pdf
- https://static.usrfiles.com/ugd/b8c837_e5cb08bb1ce948bca0a88109ccda71a8.pdf
- https://cdn.shopify.com/s/files/1/0437/4963/8295/files/19635347324.pdf
- https://cdn.shopify.com/s/files/1/0430/9273/8201/files/tatolimowitivizejo.pdf
- https://static.usrfiles.com/ugd/b8c837_0e22dc98a55340d48426becf423cc677.pdf
- https://static.usrfiles.com/ugd/b8c837_3613a9d2513a4ce6bbefef911945bafe.pdf
- https://static.usrfiles.com/ugd/b8c837_b84c6da799b543d1a62975f5d6b26b31.pdf
- https://static.usrfiles.com/ugd/b916f4_b6c06717b42a4dd090485e88bfb37b21.pdf
- https://cdn.shopify.com/s/files/1/0436/8600/2843/files/94477441000.pdf
- https://cdn.shopify.com/s/files/1/0438/3742/3776/files/cnc_machine_file_download.pdf
- https://cdn.shopify.com/s/files/1/0431/1669/1612/files/embroidery_placement_guide.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 5

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_006_off0000a197.bin` `09b7d7c346503a24242f9748245025d84222a8453b2b729eeaa31b69528bd7d1`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xA197	10872 bytes
`font_00_sfnt_off00008166.bin` `2e6447b07ad0c068975eaddc62eb7d99645d71717a3d860accfafb604c972424`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8166	4032 bytes
`font_01_sfnt_off00008fa2.bin` `b34502bff5c011f64e3c1a8beb765a884226b0042906afa196667b40e0edc31a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8FA2	5244 bytes
`font_03_sfnt_off0000c027.bin` `0a884e2b2a64fc88d4b9fecadcc188881149af302745fce0d9c8137b9aa4e45f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC027	15432 bytes
`font_04_sfnt_off0000eccd.bin` `514945215e686d16224a4b7e536e6508be0e14d45504aa5cb509a3f6f57164cb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xECCD	16124 bytes

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