PDF malware analysis — malicious · e9f8c3ca13111f88

MALICIOUS

PDF

53.2 KB Created: 2020-08-29 23:59:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 97f4f0a4cbd49ca41d3be1cf703390ef SHA-1: 1100620fcc83239385a6ca2d4338d64b7fcda6b4 SHA-256: e9f8c3ca13111f883733f3ba071d9e862e7e871df193585f29d57ad98b3c850a

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

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 text related to legal proceedings and includes the malicious URL, suggesting a phishing or social engineering attempt to redirect the user to malicious infrastructure. No scripts were extracted, limiting the analysis of direct payload execution.

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.ru/wix?keyword=demanda+de+prescripcion+adquisitiva+de+dominio+ecuador
- https://static.usrfiles.com/ugd/b8c837_3c18c599f1804bd293cf5e7b71338cb3.pdf
- https://static.usrfiles.com/ugd/6116da_297f5c80abeb4ac8b121133e7492db29.pdf
- https://static.usrfiles.com/ugd/b8c837_6addfa1903ca4b7481afaf82ee466e43.pdf
- https://static.usrfiles.com/ugd/b8c837_32dd69a182684590841fdb8e5e222b40.pdf
- https://static.usrfiles.com/ugd/b8c837_476e506ee621455a999c44bbb08bdf8b.pdf
- https://cdn.shopify.com/s/files/1/0432/2269/6098/files/blue_blue_eyes_song.pdf
- https://cdn.shopify.com/s/files/1/0434/6865/2697/files/steam_manage_subscriptions.pdf
- https://cdn.shopify.com/s/files/1/0431/8982/9800/files/14932588277.pdf
- https://cdn.shopify.com/s/files/1/0437/8155/4325/files/77000517750.pdf
- https://cdn.shopify.com/s/files/1/0437/8732/1505/files/93427121095.pdf
- https://cdn.shopify.com/s/files/1/0430/8339/9321/files/levajemadasuwos.pdf
- https://cdn.shopify.com/s/files/1/0431/4293/8784/files/dobegekusopolopijopovoz.pdf
- https://cdn.shopify.com/s/files/1/0437/8794/4094/files/josaledag.pdf
- https://static.usrfiles.com/ugd/b8c837_d72bf1bb1da8404abea58e9d5f721bac.pdf
- https://static.usrfiles.com/ugd/b8c837_86b54a4779884ccc938a13b2a93799e8.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_off00007ab8.bin` `78d4e59d1f0cd6736af5e6c5266b392da16278c04083df70484986b4a2f23f66`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7AB8	5372 bytes
`font_01_sfnt_off00008ce7.bin` `84eaab96463ae4f669e832e9871190c930ba07f6c1f779df515e515c9c1ae300`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8CE7	11304 bytes
`font_02_sfnt_off0000b1e9.bin` `ee989ca3c01167a929a766065888a0399def1744bbc45a0f6c3b11f69e640321`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB1E9	16076 bytes

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