PDF malware analysis — malicious · cf6cea70d230d061

MALICIOUS

PDF

47.5 KB Created: 2020-09-21 00:47:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 06885d468d838792aaea1db9d6687be3 SHA-1: 4e03f054414c2c0892b46d86e5b71abd3fc3bf0d SHA-256: cf6cea70d230d06121bc4e3e922c77494a38b59e57a3bd2bd3677f3606f0fbd8

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass of external links, many of which point to link farms. One critical heuristic identified a direct link to a known malicious redirector infrastructure. The document body, though obfuscated, contains the URL https://ttraff.club/wix?keyword=blockheads+taming+guide, suggesting a lure to a malicious site. No scripts were extracted from this sample.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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.club/wix?keyword=blockheads+taming+guide
- http://fafemu.thelincolnloft.com/uploads/1/3/1/3/131380397/denewexewub-geramemuz-somisepetegaraj-fupafesaz.pdf
- http://feral.stpeterchurch.com/uploads/1/3/0/7/130775493/6383849.pdf
- http://files.homeworshipping.com/uploads/1/3/2/7/132740692/bewujajekenotujuzes.pdf
- http://files.sitemuse.org/uploads/1/3/0/7/130775897/velapavubimuxim.pdf
- http://gasobuwaj.waferlab.org/uploads/1/3/1/3/131379373/71cd11096691f.pdf
- http://rubadador.carmelbayhoa.com/uploads/1/3/0/7/130740199/zajazefizon.pdf
- http://files.pushthenote.com/uploads/1/3/2/6/132696214/waweg.pdf
- http://files.ratcotu.org/uploads/1/3/2/6/132695719/87807f87f3eb.pdf
- http://lemakilo.mathiashse.com/uploads/1/3/1/6/131637873/xanuwatipibowekipifa.pdf
- https://bc3413d8-33e1-4250-8819-016eec4fcb31.filesusr.com/ugd/e1a791_44caa332713d4c18ac84d832aaf3a6b9.pdf?index=true
- https://628e5d44-fc54-41e9-a5e0-820a9784f05a.filesusr.com/ugd/bb4607_3e73c863dc16412e9e83a2a9c044e8d7.pdf?index=true
- https://bbfcf060-a4cb-4e84-880d-9ff477d0962c.filesusr.com/ugd/defd8a_54af6439879b4162b99b1dfdbf428ce5.pdf?index=true
- https://21797b36-d8cb-4eea-a4ca-9c95ad10f78d.filesusr.com/ugd/8ac1ab_eb19e25e6a544e098835d06ca456a681.pdf?index=true
- https://8f4cb5f3-f8d0-450e-a4ed-94403a7e34c6.filesusr.com/ugd/c4dbd3_54fc3268723a4d18ab6be57a5aa11a88.pdf?index=true
- 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_off00006f3d.bin` `ac8debbd96c4bdb8ae7bd782d4b1e8b464ad0c6e0d667b268bdd78e7f03a4203`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6F3D	5252 bytes
`font_01_sfnt_off000080f0.bin` `5164e7d69d2d464c196a011147e94b9e6169d15adbf6aa1a49a37d92953014c5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x80F0	10100 bytes
`font_02_sfnt_off0000a37a.bin` `ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA37A	4324 bytes

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