PDF malware analysis — malicious · a64bf8ca28d83c6f

MALICIOUS

PDF

43.5 KB Created: 2020-08-23 04:14:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 04bf7367fcfbb331f3945cbaf8ebf246 SHA-1: a4234b7d7e0681fc04db8e640d70930d00b44255 SHA-256: a64bf8ca28d83c6f2c7364f95a129f36350dc1d3e731f17c8be84199a1b2e52a

150 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy, likely to improve SEO for malicious content or to obscure the true destination. The ML classifier also strongly flagged this PDF as malicious.

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=bonjour+service+itunes+free
- http://files.southerncrossbrumbyregistry.org/uploads/1/3/1/4/131406600/6785063.pdf
- http://files.mechanismus.net/uploads/1/3/2/6/132681308/leraninaregibud-zenob-pomotewu-jufinovene.pdf
- http://sigosi.juliabassart.com/uploads/1/3/0/7/130738943/rekumopovew.pdf
- https://cdn.shopify.com/s/files/1/0430/4227/5485/files/ap_world_history_study_guide_unit_2.pdf
- https://cdn.shopify.com/s/files/1/0437/5399/6442/files/jesagebuve.pdf
- https://cdn.shopify.com/s/files/1/0431/7344/5792/files/tifoto.pdf
- https://cdn.shopify.com/s/files/1/0433/9790/6589/files/mozagizalomup.pdf
- https://cdn.shopify.com/s/files/1/0435/4742/6975/files/38328252275.pdf
- https://cdn.shopify.com/s/files/1/0461/6500/0344/files/luwelevupajofoxul.pdf
- https://cdn.shopify.com/s/files/1/0428/7502/7619/files/kizutu.pdf
- https://cdn.shopify.com/s/files/1/0434/8385/7053/files/definition_of_scientific_research.pdf
- https://cdn.shopify.com/s/files/1/0434/7514/0761/files/maxon_cinema_4d_r20_manual.pdf
- https://cdn.shopify.com/s/files/1/0440/5736/2597/files/434366598.pdf
- https://cdn.shopify.com/s/files/1/0433/0723/7531/files/faleledovefojadavuguja.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_off00006044.bin` `31905ce63a164b291d418b5267c567cbd7ab22e3d2af52ab9c221372033700a2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6044	4700 bytes
`font_01_sfnt_off00007059.bin` `17cb7631b5b0d3430ae5eb8023940af06c1b19e80371783e0be6a8ec9c0e9958`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7059	10212 bytes
`font_02_sfnt_off0000935e.bin` `9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x935E	4324 bytes

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