PDF malware analysis — malicious · bb553e40f0e9c856

MALICIOUS

PDF

36.7 KB Created: 2020-08-05 08:41:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a4512409349fce5b02a5a03e197bb26d SHA-1: 971b7740793e5642106a0ed433fbe69910134ce9 SHA-256: bb553e40f0e9c856849bf3299dba298bceb32cf449939e88639a03de8462132b

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link to 'ttraff.cc'. The ML classifier also strongly indicated maliciousness. The document body contains garbled text but includes the malicious URL, suggesting the PDF is designed to masquerade as a benign document while directing users to a potentially harmful site.

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/pify?keyword=dilations+worksheet+pdf+kuta
- http://files.renndrive.com/uploads/1/3/1/6/131637136/momozadoxa-xiludeduseven.pdf
- http://files.janeramsey.com/uploads/1/3/0/7/130739883/043c5fe929c.pdf
- http://files.drderickclinic.com/uploads/1/3/1/0/131070798/e63d571860bc.pdf
- http://files.lenorathompsonwriter.com/uploads/1/3/1/8/131856984/5513442.pdf
- https://cdn.shopify.com/s/files/1/0431/8127/7342/files/xijikexikakem.pdf
- https://cdn.shopify.com/s/files/1/0437/6441/6661/files/rimibamijeravujoxa.pdf
- https://cdn.shopify.com/s/files/1/0433/5481/6667/files/22365020192.pdf
- https://cdn.shopify.com/s/files/1/0429/5789/7882/files/70261856975.pdf
- https://cdn.shopify.com/s/files/1/0434/0993/2440/files/ford_f250_repair_manual_online_free.pdf
- https://cdn.shopify.com/s/files/1/0434/2625/0917/files/diwopifivazebujigozes.pdf
- https://cdn.shopify.com/s/files/1/0431/4241/4492/files/legend_drake_lyrics.pdf
- https://cdn.shopify.com/s/files/1/0429/4829/6857/files/77252288596.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71061356311.pdf
- https://cdn.shopify.com/s/files/1/0427/9821/9420/files/dovosasegot.pdf
- https://cdn.shopify.com/s/files/1/0440/6935/5670/files/american_airlines_microservices.pdf
- https://cdn.shopify.com/s/files/1/0432/5444/8286/files/sajetakuzan.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000444d.bin` `eed7335025e3c5fffdd094af639c5e5328856ff2c3b15b8d3b18c5846bc621f3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x444D	5164 bytes
`font_01_sfnt_off000055e1.bin` `da5ab3b44df8eeaa80f78686c8ab11cbf374b01800721a9b0c28907900952db6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x55E1	10120 bytes
`font_02_sfnt_off00007855.bin` `9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7855	4324 bytes

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