PDF malware analysis — malicious · cee5d5a4715fd054

MALICIOUS

PDF

36.6 KB Created: 2020-08-08 14:21:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c2368b28a09794ab3ffc4ba1906085d8 SHA-1: 332925e79febc7461d1850e4f09178d960e11616 SHA-256: cee5d5a4715fd054d676f669c3ff3dba0f130290d36bdeb9d703e640191d9979

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The file also exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify, likely for SEO manipulation to increase visibility. The ML classifier strongly indicates maliciousness.

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/wb?keyword=biography%20vs%20autobiography%20worksheet
- http://radegim.greater-faith.org/uploads/1/3/1/4/131406149/lepefikamejosu.pdf
- http://files.molecularultrasound.com/uploads/1/3/1/3/131379409/lutegorus.pdf
- http://voxuvi.heritagemaplefarm.com/uploads/1/3/2/3/132303382/180329.pdf
- http://files.mountziongt.org/uploads/1/3/1/3/131398141/naramisodexuxomi.pdf
- https://cdn.shopify.com/s/files/1/0433/0966/2366/files/gamumeretekajasabu.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69440205977.pdf
- https://cdn.shopify.com/s/files/1/0439/0069/8792/files/gradeup_static_gk_capsule_2020.pdf
- https://cdn.shopify.com/s/files/1/0429/6104/3605/files/13622307084.pdf
- https://cdn.shopify.com/s/files/1/0430/9309/8660/files/mevoka.pdf
- https://cdn.shopify.com/s/files/1/0432/6631/0299/files/velaledu.pdf
- https://cdn.shopify.com/s/files/1/0430/5184/3737/files/dekiguleduk.pdf
- https://cdn.shopify.com/s/files/1/0444/3645/5591/files/yamaha_yst-_sw215.pdf
- https://cdn.shopify.com/s/files/1/0432/6470/4665/files/botolukaloranamowidawevez.pdf
- https://cdn.shopify.com/s/files/1/0430/2703/8359/files/weruxupojotobe.pdf
- https://cdn.shopify.com/s/files/1/0436/4576/3744/files/nakunomawujub.pdf
- https://cdn.shopify.com/s/files/1/0431/9058/3464/files/gixexujoratebi.pdf
- https://cdn.shopify.com/s/files/1/0435/3989/0327/files/rikuturekuzinozovokup.pdf
- https://cdn.shopify.com/s/files/1/0432/3767/1075/files/lg_g6_root.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_off00004f02.bin` `b3b9b12bb0e8c08e3cb32a82e3e2e000999c7a653095cde8755eb309a5f71394`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4F02	5556 bytes
`font_01_sfnt_off00006206.bin` `5038fad25737b20f59ebf231d213c56830d727fdd73a0dced80b77f4309b1009`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6206	10292 bytes

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