PDF malware analysis — malicious · 53c500f887ac9a7e

MALICIOUS

PDF

44.0 KB Created: 2020-08-08 09:12:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9e7a88788647145806d10c17391c077f SHA-1: 4e1fd947f46eeb82bec4c6b704927ab6c95352bf SHA-256: 53c500f887ac9a7e4b013b6ce7bd4a8c28faa9c52504be2b261e0e78296cbbf9

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 benign Shopify domains, but one critical link redirects to known malicious infrastructure at 'ttraff.ru'. This suggests the document is designed to lure victims into clicking malicious links under the guise of a form. The ML classifier strongly supports the malicious nature of this PDF.

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.ru/pify?keyword=caste+validity+online+form+pdf
- http://files.joepeatfield.com/uploads/1/3/1/4/131482826/8402217.pdf
- http://files.cambridgeartfair.com/uploads/1/3/1/0/131070313/1a54fd3c5.pdf
- http://files.goreyelectrical.com/uploads/1/3/1/6/131637271/matalipugu.pdf
- http://files.matthew-wade.com/uploads/1/3/0/9/130969573/kejugivoso_diroxuwa_wufepokokus.pdf
- http://files.arkofva.org/uploads/1/3/2/6/132680796/ace7a398ae8df.pdf
- https://cdn.shopify.com/s/files/1/0436/9865/1288/files/bozifivefam.pdf
- https://cdn.shopify.com/s/files/1/0438/8637/9160/files/zififanapimabogo.pdf
- https://cdn.shopify.com/s/files/1/0437/7185/5002/files/ligopokaliw.pdf
- https://cdn.shopify.com/s/files/1/0430/4066/9849/files/turesiv.pdf
- https://cdn.shopify.com/s/files/1/0433/5727/4270/files/97444073880.pdf
- https://cdn.shopify.com/s/files/1/0432/0477/2000/files/99141225917.pdf
- https://cdn.shopify.com/s/files/1/0437/5488/1175/files/senior_staff_accountant_job_description.pdf
- https://cdn.shopify.com/s/files/1/0435/3166/5562/files/dopawaselefekisulagike.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72163988246.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15518423203.pdf
- https://cdn.shopify.com/s/files/1/0432/5185/9611/files/59974843948.pdf
- https://cdn.shopify.com/s/files/1/0430/1458/6517/files/bukorisozot.pdf
- https://cdn.shopify.com/s/files/1/0431/4585/5137/files/ellipse_algorithm_in_computer_graphics.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_off00006e97.bin` `415bd78562ee6a43e2c94a1cec09463c90ce61d85e081a89e6238001fc88d21c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6E97	5252 bytes
`font_01_sfnt_off0000806a.bin` `49b9a0ab66ceb519052971e7a06aa3a32db5e86b1917b7d66fc067564c8ce95c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x806A	10084 bytes

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