PDF malware analysis — malicious · faedee37330dc973

MALICIOUS

PDF

49.2 KB Created: 2020-07-31 23:26:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a6153e9dd078c8209062250ee09c9adc SHA-1: a736ca6584c24e93febc9d8e3ede18aa1092f11f SHA-256: faedee37330dc973482df3e1031db6c662091f5134edfbb2f07e688fcdcf8261

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, directing users to 'https://ttraff.cc/pify?keyword=leetcode+reverse+linked+list'. It also exhibits characteristics of a PDF link farm, containing numerous external links, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. 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.cc/pify?keyword=leetcode+reverse+linked+list
- http://files.ninjamagik.com/uploads/1/3/0/8/130874629/jatupisejumelovavog.pdf
- http://files.soudersthirdgrade.com/uploads/1/3/1/8/131856602/5ec6a7e4e88c5.pdf
- http://files.fvmediacenter.org/uploads/1/3/2/6/132695582/2955529.pdf
- http://files.liztatecanrelate.com/uploads/1/3/1/3/131398333/6bb181ec65b6.pdf
- https://cdn.shopify.com/s/files/1/0433/4521/5656/files/32234391732.pdf
- https://cdn.shopify.com/s/files/1/0432/9324/5590/files/28998518717.pdf
- https://cdn.shopify.com/s/files/1/0433/5819/1768/files/buzemadezu.pdf
- https://cdn.shopify.com/s/files/1/0436/4979/4213/files/wavapuloxesuwemasuzi.pdf
- https://cdn.shopify.com/s/files/1/0435/4434/6792/files/vorukuxetowenupumorub.pdf
- https://cdn.shopify.com/s/files/1/0435/6256/5795/files/55233388342.pdf
- https://cdn.shopify.com/s/files/1/0431/0673/0144/files/petebozu.pdf
- https://cdn.shopify.com/s/files/1/0433/2371/9845/files/xuzebasaraxutibetiguli.pdf
- https://cdn.shopify.com/s/files/1/0428/0814/8127/files/24207944431.pdf
- https://cdn.shopify.com/s/files/1/0434/4571/5109/files/nafovekizazor.pdf
- https://cdn.shopify.com/s/files/1/0433/9371/2286/files/bokakasipodefidana.pdf
- https://cdn.shopify.com/s/files/1/0428/5680/8607/files/29533739626.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_off000064d7.bin` `dea657b5ec3b38913303662e59d46b52ed7c50440fe13f2af72d623bba6f1ff6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64D7	4788 bytes
`font_01_sfnt_off00007537.bin` `702e9066fc02025fc041c9f35847041c0c0e8023fd301d94b69e2571a8747223`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7537	14804 bytes
`font_02_sfnt_off0000a353.bin` `9559dd1bd908241551916101fda3d445a26f5c4b506a1423f23393456f9d5940`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA353	16036 bytes

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