PDF malware analysis — malicious · 47a7e89ebd9a5f3d

MALICIOUS

PDF

59.6 KB Created: 2020-09-02 03:13:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 74e2401754cc4f8d7679c34cea1895cf SHA-1: e785a8d4c5d9a37dbc1f8d2530dffeebd6b858ef SHA-256: 47a7e89ebd9a5f3d1b5e22813a7a561eec4b369583ff6ed42cd3bdfa49016463

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file was identified as malicious due to the presence of a large number of embedded links, a technique often used for SEO poisoning or to redirect users to malicious sites. One critical heuristic flagged a link to a known malicious redirector at 'https://ttraff.ru/wix?keyword=muzammil+al+kahfi+1-+10'. Another heuristic identified a PDF link farm with 30 external links, with the first being 'https://static.usrfiles.com/ugd/d79848_1ab6f65b181743bc9e1807fc7a8cab60.pdf'. The document body contains garbled text and embedded URLs, further supporting the malicious intent.

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=muzammil+al+kahfi+1-+10
- https://static.usrfiles.com/ugd/d79848_1ab6f65b181743bc9e1807fc7a8cab60.pdf
- https://static.usrfiles.com/ugd/1decf9_433a10b3c93041d196927dd332a1e7f2.pdf
- https://static.usrfiles.com/ugd/b8c837_5b6ef798cb8945d88b24fc933ada41e6.pdf
- https://cdn.shopify.com/s/files/1/0432/5100/7648/files/vujegugewinetinatefiki.pdf
- https://cdn.shopify.com/s/files/1/0430/7383/1073/files/xixuxafep.pdf
- https://static.usrfiles.com/ugd/1813b3_aeff6af6299742dcbd8b03798d49c08e.pdf
- https://static.usrfiles.com/ugd/3c2969_a20c56a9611b419f8294bf9b6fc971c7.pdf
- https://static.usrfiles.com/ugd/defcb2_32f0cc0410ec4c4f89e8a3d53a0ea6cb.pdf
- https://static.usrfiles.com/ugd/4117a9_6267e089539049feab4ebcef4e911d8b.pdf
- https://static.usrfiles.com/ugd/8ba634_86a5f1e47ad74a6e923d06bcff93360a.pdf
- https://static.usrfiles.com/ugd/d775a9_74522d9f648f47a89d175a055b54976f.pdf
- https://static.usrfiles.com/ugd/e2f197_1b44ca79de8c473088e6c7a97b5b22be.pdf
- https://static.usrfiles.com/ugd/5af86b_a09df805d5234f3a9fed66724b8c389a.pdf
- https://static.usrfiles.com/ugd/79cb75_f5be415dec8548a3aa95cf91619a81a4.pdf
- https://static.usrfiles.com/ugd/accd1f_d21f9ccef9ff4d47a679b48e2e6679ac.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_off0000aef4.bin` `63f7ae3c18e7441c01b8e22d42b349bcd92af03408a715e9e2810ff4e4105b96`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xAEF4	28180 bytes
`font_00_sfnt_off00007778.bin` `bda6dee7695ea1f15889925882fd1db6d89230ee9d5aaa5ddc5351fd605772e5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7778	5080 bytes
`font_01_sfnt_off000088b9.bin` `8fd459b664d4413685989ee0ee15a657ae4a6841df801a6a6733cf6721da593f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x88B9	11764 bytes

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