PDF malware analysis — malicious · b7438bd301115d53

MALICIOUS

PDF

38.0 KB Created: 2020-08-30 22:57:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c15933567461fb736d66d6ec9008dbe4 SHA-1: 03e3f3ebd65da2bce07dd64336531bd07a3a7845 SHA-256: b7438bd301115d538dee586fdb93bc1fdda8a46b61c676f979a159df7de23848

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL, 'https://ttraff.cc/wix?keyword=the+norton+introduction+to+literature+shorter+12th+edition+pdf+free', is designed to lure users by impersonating a free book download. The document body, though heavily obfuscated, contains references to the book title and the malicious URL, reinforcing the lure.

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/wix?keyword=the+norton+introduction+to+literature+shorter+12th+edition+pdf+free
- https://static.usrfiles.com/ugd/26938b_6a823ff7c27344b7975c45abe1800697.pdf
- https://static.usrfiles.com/ugd/b8c837_b43b10d13710497bb1d1f064c5cd565d.pdf
- https://static.usrfiles.com/ugd/b8c837_665cf2c14ae843bfb5d9ccd3087f63af.pdf
- https://static.usrfiles.com/ugd/3f4b99_dc52cc050d874290aeafe50e61286e01.pdf
- https://static.usrfiles.com/ugd/868401_79ba28fb2b9c4601879f652606caece1.pdf
- https://static.usrfiles.com/ugd/b8c837_245ffa7f2bc344569f12a01034556000.pdf
- https://static.usrfiles.com/ugd/b8c837_95b63f57fc54495db8ce1454c6586e8f.pdf
- https://static.usrfiles.com/ugd/3aee12_0c6d7a068d624a46809d7b70382ea6a4.pdf
- https://static.usrfiles.com/ugd/87b9a8_3cd773fc45344c488d01519e5947e7c7.pdf
- https://static.usrfiles.com/ugd/b8c837_1f15bf8ca81d47c7aa6493ce4159c306.pdf
- https://static.usrfiles.com/ugd/4b874d_234adf736bad41f9b86fa2942ea0ffa2.pdf
- https://static.usrfiles.com/ugd/57c819_aa2c40a7fdf14774b92c08ddc6f71df1.pdf
- https://static.usrfiles.com/ugd/45e30f_b7494f3d32cd4c359d320a899ad50641.pdf
- https://static.usrfiles.com/ugd/f46427_886a7221541d4c379e6e61e2f69957b4.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_off00004916.bin` `6a9a1938d102e7b513e7f98836e3fa605f2cbf4f63299c542fa35105d941d136`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4916	5260 bytes
`font_01_sfnt_off00005ae9.bin` `69519a96d83bb58b89acb8a149c9404000ad115c45dfe6d6c88995a698d408d1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5AE9	9804 bytes
`font_02_sfnt_off00007c91.bin` `4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7C91	4324 bytes

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