PDF malware analysis — malicious · abe6ab93655977a3

MALICIOUS

PDF

42.5 KB Created: 2020-09-17 21:38:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 01cf3a7d1ba4d5531eba7a9a9d3c5a53 SHA-1: d22ebe66c3979daada609c15f6eaf7d41388f14f SHA-256: abe6ab93655977a35567c172e046dd47eb263a6f9d67ce30e9eae7500dd89c66

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting a link farm or SEO manipulation tactic. The ML classifier also strongly flagged this PDF as malicious. The presence of these links and the high ML score indicate a malicious intent, likely to redirect users to harmful content or to manipulate search engine results.

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=oxford%20hills%20high%20school%20me
- http://kagoj.artscollective.co.nz/uploads/1/3/1/6/131606271/barogazuxisaxivoze.pdf
- http://files.laniergsa.org/uploads/1/3/1/4/131482988/6324114.pdf
- http://files.2strongfitness.com/uploads/1/3/2/7/132740462/lanolunasire.pdf
- http://files.paynefieldfarm.com/uploads/1/3/1/0/131070072/6650408.pdf
- http://files.zuppfitness.com/uploads/1/3/1/6/131636987/845389.pdf
- http://moxifoluw.tomballmemorialcheer.com/uploads/1/3/1/0/131070722/6d8c89d8a2ccc.pdf
- http://files.artfromthepost.com/uploads/1/3/1/4/131438002/fomurot.pdf
- http://files.tatterspanish.com/uploads/1/3/2/7/132712006/fimavorimekakikawu.pdf
- http://files.numptynerd.net/uploads/1/3/1/6/131637928/jutixuvig.pdf
- https://03b68530-ee98-4418-8119-aa1705d14a20.filesusr.com/ugd/10cedf_34003e77c7c94d98bebcda0237aee603.pdf?index=true
- https://8e266860-8bb3-4b13-8ceb-635b2bf54ffe.filesusr.com/ugd/bf0735_1f85954f557141138ec527ab12845f62.pdf?index=true
- https://249d7e16-9414-4276-ba65-bb18072d3624.filesusr.com/ugd/bf0735_150dc4ff44ed4199b2f3b94bc79f36e1.pdf?index=true
- https://25be4fa9-7a25-410a-8393-9d2587e55883.filesusr.com/ugd/0286dd_3d815411b82e4a80a1a52931cdb8b5a6.pdf?index=true
- 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_off00005acd.bin` `61e713d8d020bed9024f77677be69f3e930fe22146b04b0e45dd8bb51c35b678`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5ACD	4924 bytes
`font_01_sfnt_off00006b8b.bin` `49346b28f24f356d60a6a99cf29aa0d406d2909fca530a9f82b56c0481ecf063`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6B8B	10480 bytes
`font_02_sfnt_off00008f54.bin` `ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8F54	4324 bytes

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