PDF malware analysis — malicious · 99c25ce99fdb62d6

MALICIOUS

PDF

42.2 KB Created: 2020-08-31 10:43:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 04f290fd8ee1ab2bfd229d95f98c296c SHA-1: bf6cbd6978d00607ef4c838c4462a7bf49f41230 SHA-256: 99c25ce99fdb62d67615441097df6a64d01ae32bcf31df0ca8b458f8b9114793

160 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1204.001 Malicious Link: Malicious Link T1059 Command and Scripting Interpreter T1059.003 Command and Scripting Interpreter: Windows Command Shell

The PDF file contains a social engineering lure, as indicated by the 'SE_CLICKFIX' heuristic, instructing the user to execute a command. It also contains a malicious redirector link pointing to 'https://ttraff.ru/wix?keyword=minecraft+crafting+book+mod+1.7.10'. The document body, though heavily obfuscated, appears to contain references to the same URL and a list of other PDF links, suggesting a link farm for SEO manipulation. The primary attack vector is the malicious redirector link.

Heuristics 4

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.
ClickFix social engineering attack high SE_CLICKFIX

Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
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.ru/wix?keyword=minecraft+crafting+book+mod+1.7.10
- https://static.usrfiles.com/ugd/b8c837_a7c462d476e04256a53a9cc320975875.pdf
- https://static.usrfiles.com/ugd/e2b09b_994ae3b5601c44188358a51b6b8274ec.pdf
- https://static.usrfiles.com/ugd/3ceeb9_78d7b33b045d4d66ad7454a805222937.pdf
- https://static.usrfiles.com/ugd/856cea_7c3c8dc98841479eb54b1df23e839501.pdf
- https://static.usrfiles.com/ugd/b8c837_1bdbb0d4f5a04927be908f51557ccff3.pdf
- https://static.usrfiles.com/ugd/97368a_880ff125774d4e1cbce86914d57ffcc6.pdf
- https://static.usrfiles.com/ugd/756799_150992ed334b49c8aa7c66d6f176ca62.pdf
- https://static.usrfiles.com/ugd/55cc32_febc75581875435e9cebbbf01d9fa4bf.pdf
- https://cdn.shopify.com/s/files/1/0428/2286/0966/files/tiberebawokekomexu.pdf
- https://cdn.shopify.com/s/files/1/0429/1995/2550/files/vasusatof.pdf
- https://static.usrfiles.com/ugd/b8c837_fd78d30831c44b54afee094af1d5ca48.pdf
- https://static.usrfiles.com/ugd/b8c837_44121cb3184d4762b3b64512f465a8bb.pdf
- https://static.usrfiles.com/ugd/11f207_bb25925171a84d4c9560880e0c3baffc.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_off0000655f.bin` `8c33ddcf5bff4a07bf3d2dd7b46a0e9a8a3934e3f8260126ca8e84ed0223f7d4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x655F	5644 bytes
`font_01_sfnt_off0000789e.bin` `9e22350eb0859c00abb79923db8aaa30cdf3480b3349ce071e341b57468700bd`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x789E	10472 bytes

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