PDF malware analysis — malicious · 7783f08918b2ad4e

MALICIOUS

PDF

60.7 KB Created: 2020-08-29 11:40:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 6439d9bb0f166c5a2398ccfa37b57253 SHA-1: dcbb4757b3a1b9a37abd8d12b415df5a2dd942c7 SHA-256: 7783f08918b2ad4edbf10df24df0aaca39f5c3c3cb45210aeefb65df5188ec17

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous links, including one that redirects to known malicious infrastructure. The document body, though heavily obfuscated, contains text related to a 'Bengali calendar 1426 pdf' and the malicious URL. This suggests a social engineering tactic to trick users into clicking the link, which likely leads to further malware delivery.

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.cc/wix?keyword=bengali+calendar+1426+pdf
- https://static.usrfiles.com/ugd/b8c837_9947050d62384407bd39a6aeef7e5bc2.pdf
- https://static.usrfiles.com/ugd/b8c837_e7f2821b128948499859d5dc8850d0dc.pdf
- https://static.usrfiles.com/ugd/b8c837_84029edf1b3a45da88a7fd3f60b5ca77.pdf
- https://static.usrfiles.com/ugd/b8c837_88218eff24bf439d88857ad7bd5bbd51.pdf
- https://static.usrfiles.com/ugd/b8c837_c45b466862d24e3e9a3067ae7ffe2457.pdf
- https://static.usrfiles.com/ugd/b8c837_b47c0721ac234d118d943dcd9daec2fc.pdf
- https://static.usrfiles.com/ugd/b8c837_2834814971b8414ca577aa28b115deb1.pdf
- https://static.usrfiles.com/ugd/b8c837_5a72c0dbd08049159532716359c511d1.pdf
- https://static.usrfiles.com/ugd/b8c837_a280cedc3c0c4f8897d8e171bd0774a9.pdf
- https://static.usrfiles.com/ugd/b8c837_a52c3384528c42f8ad4560c85f05aa5e.pdf
- https://static.usrfiles.com/ugd/b8c837_6bbe7b0b87044de9a6d8e13954698cf6.pdf
- https://static.usrfiles.com/ugd/b8c837_de08946a9d27462793c77bec0e9c467d.pdf
- https://static.usrfiles.com/ugd/b8c837_aeddb19347b04e68bcea4855b5baf55f.pdf
- https://static.usrfiles.com/ugd/b8c837_b111bcfe82c842a28e11f9337c50e9df.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_off00008299.bin` `15510640c665e0ff97748d42ae020c1769dd0901cabfae6f0595c15b0e414787`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8299	5620 bytes
`font_01_sfnt_off000095ca.bin` `d9705be924bd2f9349cc4179dacacef0095b9eea7ea0cb1fb001baa982613000`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x95CA	10804 bytes
`font_02_sfnt_off0000b8ae.bin` `0421752d948305a013ad9e11803a2c7da61a5d6ff95ec3b58298113ece587383`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB8AE	14508 bytes

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