PDF malware analysis — malicious · 76b3aada4e0601d5

MALICIOUS

PDF

56.5 KB Created: 2020-07-31 10:50:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ff5b13c7c9d655f3e2809b46ba628cb1 SHA-1: 1feef4771d47f9deb35ea30e1dc3522e68f1c261 SHA-256: 76b3aada4e0601d5dcde13bba65349f8d0d3ed166d08654ef333e7ac41474663

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this, indicating an attempt to lure users to harmful sites. The 'PDF_SEO_LINK_FARM' heuristic suggests a large number of outbound links, likely for SEO manipulation or to obscure the malicious destination. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the exact lure.

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/pify?keyword=algebra+di+lie+pdf
- http://files.rcm-asheboro.com/uploads/1/3/0/7/130775714/20fb50aa0718.pdf
- http://files.alhasoob.co.uk/uploads/1/3/0/7/130740461/tabevubibipit.pdf
- http://files.allabouttrumpet.com/uploads/1/3/0/8/130814976/bovutesudoki.pdf
- https://cdn.shopify.com/s/files/1/0430/1642/1529/files/78472722360.pdf
- https://cdn.shopify.com/s/files/1/0430/4447/0945/files/41979826166.pdf
- https://cdn.shopify.com/s/files/1/0432/8577/4491/files/bejitavuvizezuwube.pdf
- https://cdn.shopify.com/s/files/1/0428/9318/1081/files/soginenumimajixuvi.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kemulubu.pdf
- https://cdn.shopify.com/s/files/1/0437/2830/6341/files/98508529026.pdf
- https://cdn.shopify.com/s/files/1/0437/1939/3448/files/27318680501.pdf
- https://cdn.shopify.com/s/files/1/0429/3489/4755/files/mefupemuweri.pdf
- https://cdn.shopify.com/s/files/1/0438/2723/2918/files/tokugixak.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xekosipavejidowusa.pdf
- https://cdn.shopify.com/s/files/1/0431/9654/7232/files/30726801649.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/
- https://cdn.shopify.com/s/files

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000079aa.bin` `f1585241b59a1002e627af24859d8bddc2a41f5101ead6a7a290360bc82d6b36`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x79AA	2912 bytes
`font_01_sfnt_off0000840f.bin` `f0b496ecb2b5b77e93ed9d6477a90449309e367a171dfe50b8519a32b92e4578`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x840F	4652 bytes
`font_02_sfnt_off000093e4.bin` `e55a719fbca9bb90c4f3395d60625e8fa707ed84750d4772691ba216cdd246f9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x93E4	13464 bytes
`font_03_sfnt_off0000bed0.bin` `b08ea9350701f3666e8bcfc882b103c5206c3ed97749c192c3d228e82254f475`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBED0	16304 bytes

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