PDF malware analysis — malicious · 2c2530772222d488

MALICIOUS

PDF

56.4 KB Created: 2020-08-31 11:58:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: aca857e9ede528d5b8f3c1c3df77bf61 SHA-1: 21244e900d39cf1679e5440858e4436cdaa73dc0 SHA-256: 2c2530772222d488ef4fd7b9a490a072647eda39b688fbcf5eafa26d84ad0cc5

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains references to software names and URLs, suggesting a lure. The heuristic firings confirm the presence of a malicious redirector and a large link farm within the PDF, indicating an attempt to drive traffic to potentially harmful sites. No scripts were extracted from this sample.

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=foxit+phantompdf+free
- https://static.usrfiles.com/ugd/b8c837_93241c886a3e4ff28d10ec4dead6cf3e.pdf
- https://static.usrfiles.com/ugd/87a178_339c392079c640698db36f0bd85ff69e.pdf
- https://static.usrfiles.com/ugd/1f6d71_afa4c2c1f0874d528d3328053e838433.pdf
- https://static.usrfiles.com/ugd/b8c837_edda605b7c2e48e6832091829f7ad355.pdf
- https://static.usrfiles.com/ugd/b8c837_51a779df1f9348c3967d9a86dfea61fc.pdf
- https://static.usrfiles.com/ugd/b8c837_4d0dcc6942254291ad08b1dd63b43c85.pdf
- https://static.usrfiles.com/ugd/b8c837_6856c0cdcb6f437490f3127a4ce77cb9.pdf
- https://static.usrfiles.com/ugd/affb4a_ace6c03426b84bf28b050d5d1541bc09.pdf
- https://static.usrfiles.com/ugd/defcb2_da2e42765ec24a90a0e5d8f1fdc669ae.pdf
- https://static.usrfiles.com/ugd/7598fa_826a381683e24ebc9c5fde853e70d280.pdf
- https://static.usrfiles.com/ugd/73cb9e_883b647e97384236ab01bd14c7301868.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tufajotojitumawudawemir.pdf
- https://cdn.shopify.com/s/files/1/0438/0560/6049/files/python_string_format_named_arguments.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58580374151.pdf
- https://cdn.shopify.com/s/files/1/0430/1848/5923/files/23761275108.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
`stream_005_off0000a220.bin` `a59adf94c644faf8e52e81e9e2e1d082295aa18dfd1f9ad4ae4630b56b4815f6`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xA220	28244 bytes
`font_00_sfnt_off00006e1f.bin` `73a204e38007c895f21a7dcfed527c54522ad743dad058ff766285321c742f48`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6E1F	5096 bytes
`font_01_sfnt_off00007f46.bin` `a27cfee93495078ef3fd0244bd5c77d74eed770d2fa5c9048900a3509b35477b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7F46	10080 bytes

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