PDF malware analysis — malicious · 96fd51021eb7ccde

MALICIOUS

PDF

43.8 KB Created: 2020-08-30 08:21:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bd07e85b5946aa61a55ef3ea1239e984 SHA-1: 9027af4489d0ec2cf4e10a61346e06825b37e6af SHA-256: 96fd51021eb7ccde08b4b8141c70102db8d100b900047a90f49e5d94d9a37f6f

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.me/wix?keyword=tempus+sans+itc+bold+font+free+downl'. The document body, though heavily obfuscated, also contains this URL, suggesting a lure for a font download. The presence of numerous other links, identified as a PDF link farm, further supports the malicious intent of redirecting users to potentially harmful content. 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.me/wix?keyword=tempus+sans+itc+bold+font+free+downl
- https://static.usrfiles.com/ugd/b8c837_c79df8530f58410ab29620deeff8cf9f.pdf
- https://static.usrfiles.com/ugd/c20ea7_960e0bf1998445acae0d3aa3ec10dbf4.pdf
- https://static.usrfiles.com/ugd/dad90e_002feee3d2c64f05ac57426428a6ca3d.pdf
- https://static.usrfiles.com/ugd/ae059d_ca8cbe97e76a42779f4d9f110e0088fc.pdf
- https://static.usrfiles.com/ugd/b91566_d09aa5d684f445c6a23d0c1d1e732751.pdf
- https://cdn.shopify.com/s/files/1/0427/8062/3015/files/40910564519.pdf
- https://cdn.shopify.com/s/files/1/0428/2816/9382/files/coordinate_geometry_formulas_for_jee_mains.pdf
- https://cdn.shopify.com/s/files/1/0463/3634/4226/files/chronograph_watch_face_android_wear.pdf
- https://cdn.shopify.com/s/files/1/0429/9145/2314/files/vujajugajovugatexadumeko.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tesip.pdf
- https://static.usrfiles.com/ugd/80c1db_8c52363284e342f4923468f31a51c2cc.pdf
- https://static.usrfiles.com/ugd/b8c837_ca74d9dd5a584ad8b942c1ef8aaa3821.pdf
- https://static.usrfiles.com/ugd/b6edda_bee35c4ce57d4b5a820a23298fc90d95.pdf
- https://static.usrfiles.com/ugd/a1fb72_339e445d865d482b836ad7afbc6d9e03.pdf
- https://static.usrfiles.com/ugd/b8c837_4b2644d78f39464fa3d97d8f0891de10.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_off00005645.bin` `9d0072766f8b844296ede66f7bf5f6b4187b67a0c5d7696b8219f584eb61618e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5645	5480 bytes
`font_01_sfnt_off000068d1.bin` `ff822f70d5ec8ff24d514de75cb53f82d3b3cd5f156198997ee440b89c87ef28`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x68D1	10732 bytes
`font_02_sfnt_off00008d5f.bin` `ff88491e9b53368aa3a30e8dd34a5b3a2a650623abbadb69eae8d512e7150c33`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D5F	16084 bytes

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