PDF malware analysis — malicious · 42ba6fedacff87b0

MALICIOUS

PDF

53.1 KB Created: 2020-07-31 19:52:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 02f11c8d4266ddcddbf115facf4b29b5 SHA-1: 3f7950648ba59648a9b4df353f1d9a24d48fddd2 SHA-256: 42ba6fedacff87b07019249757a4e09ef65c413b46df665ea90cf57f8aac5500

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external links, suggesting a link farm. One of the primary URLs points to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination. The document body contains garbled text but does include the URL 'https://ttraff.cc/pify?keyword=most+popular+discord+servers', reinforcing the heuristic findings.

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.cc/pify?keyword=most+popular+discord+servers
- http://files.nikkiheyder.com/uploads/1/3/2/6/132681343/zegun_reromi_donotije.pdf
- http://files.nydrivinglessons.com/uploads/1/3/1/8/131871705/9870994.pdf
- http://files.measurev-mcag.com/uploads/1/3/1/4/131408103/gesavo.pdf
- http://files.bangaleebushcare.org/uploads/1/3/1/6/131606118/nulamaferu_xujoravopefejol_bonututax_sidegelajefani.pdf
- https://cdn.shopify.com/s/files/1/0433/3997/2773/files/7446534033.pdf
- https://cdn.shopify.com/s/files/1/0427/9179/6902/files/goduz.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37263727017.pdf
- https://cdn.shopify.com/s/files/1/0432/1126/0062/files/talifutijomo.pdf
- https://cdn.shopify.com/s/files/1/0430/0279/0039/files/mejomiwolakolitepagawa.pdf
- https://cdn.shopify.com/s/files/1/0436/1325/7885/files/rezuxef.pdf
- https://cdn.shopify.com/s/files/1/0429/4279/1839/files/70562272652.pdf
- https://cdn.shopify.com/s/files/1/0438/5302/1334/files/foxit_mobilepdf_reader.pdf
- https://cdn.shopify.com/s/files/1/0435/8710/9023/files/47053201552.pdf
- https://cdn.shopify.com/s/files/1/0434/2641/4749/files/62396041106.pdf
- https://cdn.shopify.com/s/files/1/0434/3414/7989/files/82101060001.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_off00007a4f.bin` `ce136e949d499121b1676ef8ec324189dd5e2e2efc0a35c1852d75b2014b487e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7A4F	5132 bytes
`font_01_sfnt_off00008be6.bin` `431fa1433e7e0ed458cd8d5ca0a4ce94e14412e8522f920950c8d28e8da9d2a3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8BE6	10980 bytes
`font_02_sfnt_off0000b150.bin` `04b30c2f2a8018c7583bcbc57b73eccbfb80cfa1e5a2d096ee4f0652c1212bf0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB150	16320 bytes

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