PDF malware analysis — malicious · 9db5bf8de6273860

MALICIOUS

PDF

47.3 KB Created: 2020-08-01 02:40:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ad367ef90a126096cc355ae84dff45da SHA-1: 6fc0975e524fa4afb8c04f80277e8d1d33921c43 SHA-256: 9db5bf8de6273860f58163338162cb93c324e101c4d5ca83a78ee00498582477

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link that redirects to a known malicious infrastructure, specifically 'ttraff.cc'. The document body, though heavily obfuscated, contains the text 'Mortal kombat 2 moves' and the malicious URL, suggesting a lure to entice users to click the link. The presence of numerous other PDF links, many hosted on shopify.com, indicates a link farm strategy, likely to improve SEO or distribute malicious content. The ML classifier strongly flagged this PDF as malicious.

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=mortal+kombat+2+moves
- http://files.homegrownpets.com/uploads/1/3/1/4/131437333/gitedufoxeximimipede.pdf
- http://files.hobsonschool.org/uploads/1/3/2/7/132712661/duripupemapa.pdf
- http://files.eurekasecondaryschool.ie/uploads/1/3/1/3/131398222/885ae97.pdf
- http://files.breedingforthefuture.com/uploads/1/3/2/6/132681566/sutavumuz.pdf
- http://files.fionaharrisonmusic.com/uploads/1/3/0/9/130969034/filitixowojag.pdf
- https://cdn.shopify.com/s/files/1/0429/2476/9436/files/pabekisanokawate.pdf
- https://cdn.shopify.com/s/files/1/0432/6424/5925/files/xazepe.pdf
- https://cdn.shopify.com/s/files/1/0430/7006/2754/files/sugusifipavajufipofi.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zemeletitofugawekabol.pdf
- https://cdn.shopify.com/s/files/1/0427/8085/2383/files/94018340192.pdf
- https://cdn.shopify.com/s/files/1/0437/8735/4270/files/23621636292.pdf
- https://cdn.shopify.com/s/files/1/0434/4207/7852/files/33600238621.pdf
- https://cdn.shopify.com/s/files/1/0429/6015/8873/files/botobax.pdf
- https://cdn.shopify.com/s/files/1/0438/4981/0080/files/renokidisiretiweji.pdf
- https://cdn.shopify.com/s/files/1/0430/0596/8537/files/sinukogiv.pdf
- https://cdn.shopify.com/s/files/1/0431/2799/6565/files/79691483454.pdf
- https://cdn.shopify.com/s/files/1/0437/1179/1253/files/50229203994.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000701d.bin` `08501ebb7408810de65323c044e3803247750bf20e5435e2fa64bc12b58f282b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x701D	5232 bytes
`font_01_sfnt_off000081e2.bin` `12f9320500ddaf2a570b45199671724a3909c749d09f2570df855b69aae70e61`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x81E2	15068 bytes

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