PDF malware analysis — malicious · 3fc7225e62326a35

MALICIOUS

PDF

95.8 KB Created: 2020-09-03 09:19:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 7580f7d2ba31f2c4adae60f6151acd92 SHA-1: 2da32b3c99d77718d2dc89afd4336112988b8567 SHA-256: 3fc7225e62326a3595a07f8b1f4b1f40a78e5ceb40d6b8b99cd6959b281704e8

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.me/wix?keyword=font+kaligrafi+bismillah'. This URL is presented within the document body, suggesting a lure to download a font. The PDF also contains a mass external PDF link farm, with many links pointing to static.usrfiles.com, indicating a potential SEO poisoning or link farm strategy to distribute malicious content. The document body itself is heavily obfuscated but contains the malicious URL.

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.me/wix?keyword=font+kaligrafi+bismillah
- https://static.usrfiles.com/ugd/0d2908_8f1dcb5decc94e29ad8b4e201ce290ff.pdf
- https://static.usrfiles.com/ugd/b8c837_ddbe9f7b9f6d4273aa45a7eb0b4c2d32.pdf
- https://static.usrfiles.com/ugd/b8c837_9e56b2ce15c044e99ac8fe15d1b72301.pdf
- https://static.usrfiles.com/ugd/af0aa9_09ce394e34824d609d7fdce88d058fd9.pdf
- https://cdn.shopify.com/s/files/1/0430/8582/4164/files/7942481159.pdf
- https://static.usrfiles.com/ugd/7f929b_c3935e360cce44e8a470eee2724b24a9.pdf
- https://static.usrfiles.com/ugd/b8c837_aecdab9270964012a74f003896c4ad80.pdf
- https://static.usrfiles.com/ugd/b58d21_a54dc69afa31487f9e6a53817abb9acb.pdf
- https://static.usrfiles.com/ugd/a59130_e3b06a35c4ec445e85b538144176d7d6.pdf
- https://static.usrfiles.com/ugd/432b07_9ef844282b8a47e5a3832eb75bda5c60.pdf
- https://static.usrfiles.com/ugd/9f6a24_09ed9737be5e41f4b54142f2d0e064a7.pdf
- https://static.usrfiles.com/ugd/67f5f7_175dc803176345a69045e3a815753eac.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_006_off000130e4.bin` `9d6683a4ad10e9f231723e2d6f5b0c49d6a07232294b1caf9cd60c7ebffc9066`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x130E4	28072 bytes
`font_00_sfnt_off0000f92e.bin` `a32d55f4e58cd3b1b0a324f9c9d3a54de76919cef7a7efc956d6f95f857be8da`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF92E	5008 bytes
`font_01_sfnt_off00010a00.bin` `3fa5ca6cfedd2252af9abc93d4563fadc0c0f59eec2161060d68fe21e590db94`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10A00	11916 bytes
`font_03_sfnt_off000163d5.bin` `1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x163D5	4324 bytes

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