PDF malware analysis — malicious · b4cfc0a00bf750c8

MALICIOUS

PDF

55.0 KB Created: 2020-08-31 08:54:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 68dee0e76187d95abbcdd99ac1f4154c SHA-1: ec191169e1199ff6a88fda092fc9cf22baddba39 SHA-256: b4cfc0a00bf750c8af10df11ebb170df7a51dde5f8b4ed8f4879a98799f4665c

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting an attempt to manipulate search engine results or distribute malicious content. The primary malicious IOC is the redirector URL, which likely leads to further malicious activity.

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=irish+bouzouki+chords+gdad+pdf
- https://static.usrfiles.com/ugd/097bd5_86f5f9ec048b47418adadc7cfcb11ecd.pdf
- https://static.usrfiles.com/ugd/b8c837_e7dec993685842a59996048e02d31b77.pdf
- https://static.usrfiles.com/ugd/b8c837_f0f034a21b39484ca9803036e72f6feb.pdf
- https://static.usrfiles.com/ugd/c7a620_0ae2fd9491f44f97b30d9f124298125c.pdf
- https://cdn.shopify.com/s/files/1/0469/4720/5281/files/how_to_write_a_refusal_letter_for_job_offer.pdf
- https://cdn.shopify.com/s/files/1/0434/2421/9293/files/ralulobasulum.pdf
- https://cdn.shopify.com/s/files/1/0434/2788/9302/files/6th_grade_fiction_book_report_form.pdf
- https://cdn.shopify.com/s/files/1/0431/7547/7405/files/sakasemetujakikikag.pdf
- https://cdn.shopify.com/s/files/1/0437/1503/5288/files/ramilad.pdf
- https://static.usrfiles.com/ugd/2486b5_49b6eac835ad40548f4fd8782b490474.pdf
- https://static.usrfiles.com/ugd/5360f8_5d2ffcd550bb45e4a4aa19805d6a2e56.pdf
- https://static.usrfiles.com/ugd/e3c460_be6ba542e6d2488ca6329a87a72ae9ef.pdf
- https://static.usrfiles.com/ugd/b8c837_0152b6c1b64d441b896f505e0f1b241d.pdf
- https://static.usrfiles.com/ugd/23e9be_2cb8adbd74d4439fa11bfa0fae62a289.pdf
- https://static.usrfiles.com/ugd/b8c837_f41429a1127d412aaa97870cbc82fe1f.pdf
- https://static.usrfiles.com/ugd/b42fd6_2dcfa51f27db4dda81083c6abfe52ed6.pdf
- https://static.usrfiles.com/ugd/10b11f_14cfdbdcb091447d846a394718c4a178.pdf
- https://static.usrfiles.com/ugd/a2c2bc_72b242b8ca17424488222382fc3d1cfc.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_off00009739.bin` `9731f7334b5037f52dfc5f29010ca8623715291083a2396e89ce33b0346539c3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9739	5576 bytes
`font_01_sfnt_off0000aa29.bin` `543a181ae0fbadf2310f1de21bd30701b51223945765cb737f2d1428321ba3f7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAA29	10636 bytes

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