PDF malware analysis — malicious · 20cb65d9052b7cac

MALICIOUS

PDF

41.5 KB Created: 2020-07-29 11:03:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a43d480686909fe77946c1c08d30c765 SHA-1: 34a83470466311b8b9ba991a1590bfd688bddc38 SHA-256: 20cb65d9052b7cac945088dd4ec2a7861666ffc9794d73b9d6fe2a1994024e88

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link pointing to 'ttraff.com', which is flagged as malicious. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on 'cdn.shopify.com'. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, appears to be a lure related to a book title, suggesting a phishing or content-piracy-themed social engineering attack.

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.com/pify?keyword=breve+historia+del+neoliberalismo+david+harvey+pdf+gratis
- http://files.missionlenders.net/uploads/1/3/0/8/130874511/2441119.pdf
- http://files.nphsjrwolfpack.com/uploads/1/3/1/4/131483253/pageponiputi_gosalobire_vopepas_fatibo.pdf
- http://files.naturaleclecticism.com/uploads/1/3/1/4/131437243/pibedafinafup_xugabatuliguga_sogaxozodoka_warodiresu.pdf
- http://files.westerncanineacademy.ca/uploads/1/3/1/3/131383664/lobop.pdf
- http://files.naturaleclecticism.com/uploads/1/3/1/4/131437243/pibedafinafup_xugabatuliguga_sogaxozod
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vinujavezo.pdf
- https://cdn.shopify.com/s/files/1/0431/2023/0564/files/69035736197.pdf
- https://cdn.shopify.com/s/files/1/0436/5395/5742/files/gotavotosododutiwuko.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sitadekekogog.pdf
- https://cdn.shopify.com/s/files/1/0432/4950/0328/files/11238368799.pdf
- https://cdn.shopify.com/s/files/1/0429/8915/8554/files/47792381836.pdf
- https://cdn.shopify.com/s/files/1/0438/3876/7266/files/borugimukejiwubep.pdf
- https://cdn.shopify.com/s/files/1/0428/9986/5756/files/dulizude.pdf
- https://cdn.shopify.com/s/files/1/0431/4251/2791/files/50985501670.pdf
- https://cdn.shopify.com/s/files/1/0431/6869/4423/files/88842142679.pdf
- https://cdn.shopify.com/s/files/1/0434/1320/9246/files/29109404745.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_off00005e09.bin` `516ba2bd06391dde1062493b33e089e10e4997e669a12a29dbd4c41a7a196c16`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E09	5592 bytes
`font_01_sfnt_off000070e9.bin` `741e24646546514009cca19886977acc5b715219cc798fa2e73136f3b76453ac`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x70E9	11444 bytes

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