PDF malware analysis — malicious · 9bee4f0bcc1ef5ee

MALICIOUS

PDF

42.4 KB Created: 2020-07-09 14:59:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 4c1d19509d3c46916217a0f5ac18421f SHA-1: b7b59d81048c402b1c682a46e1d56be1e317ff4c SHA-256: 9bee4f0bcc1ef5eee85eea06e25460ec8cb6274126a255ffb8c65470a29794d6

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF file contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. The document body, though heavily obfuscated, contains keywords like 'school refusal pdf' and the primary malicious URL, suggesting a lure to direct users to potentially harmful content. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a phishing or redirection attack.

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/wb?keyword=school%20refusal%20pdf
- http://files.biohealthworksinstitute.com/uploads/1/3/1/8/131871994/bujirevisunolo_xabaviza_gimov.pdf
- http://files.simplydivinesuds.com/uploads/1/3/1/4/131407812/23f3d849.pdf
- http://files.princetonrescue-edu.com/uploads/1/3/1/3/131378918/8802449.pdf
- http://files.richmondeducationfoundation.com/uploads/1/3/2/8/132814448/5444816.pdf
- http://files.sjtcounseling.com/uploads/1/3/0/8/130814342/robese.pdf
- http://files.dvmetalart.com/uploads/1/3/0/9/130969746/xekil.pdf
- http://files.match-gems.com/uploads/1/3/0/8/130814161/2009054.pdf
- https://duvupokupig.files.wordpress.com/2020/06/medipem.pdf
- https://jowezeda.files.wordpress.com/2020/07/58557836695.pdf
- https://jogapodu.files.wordpress.com/2020/06/40920773850.pdf
- https://xusogoresob.files.wordpress.com/2020/06/gavejarezo.pdf
- https://tokejar.files.wordpress.com/2020/07/19731973796.pdf
- https://sokatuvep109458814.files.wordpress.com/2020/07/6709346798.pdf
- https://jozosativotu.files.wordpress.com/2020/06/sunedunasaxo.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37638787324.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31056735454.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nifafujejugafux.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50878135704.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/54313135065.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_off00006a13.bin` `b8c10a62caf095f7207dbd27d53df441c087c69370a943084077b2744ad04631`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6A13	4992 bytes
`font_01_sfnt_off00007b11.bin` `6251fbe0dd4a0cf823c1b49a2ff3c8ba6e50b1d9d96e22d21c258f2849839f17`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7B11	10012 bytes

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