PDF malware analysis — malicious · e9ac3e3706aef4af

MALICIOUS

PDF

39.9 KB Created: 2020-08-31 05:14:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 33d2d9a67670679b5f39aeda93b757ca SHA-1: 4b897dbd8fb0312bbde5ec0c44926ed3e4079b68 SHA-256: e9ac3e3706aef4af826e2896346945ed49b364bd7f75172c2f66e17756bedf7e

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF contains a mass of external links, including a redirector to 'ttraff.com', suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains the text 'jennie allen dream guide' and the malicious URL, indicating a lure to entice users to click the malicious link. The presence of numerous benign-looking PDF links likely serves to obscure the malicious redirector.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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/wix?keyword=jennie+allen+dream+guide
- https://static.usrfiles.com/ugd/b8c837_58ab13cd913f46148ffee3d58e94a141.pdf
- https://static.usrfiles.com/ugd/26481d_e1e5a207b37d4610adc5095a1241e4d2.pdf
- https://static.usrfiles.com/ugd/b8c837_6f19988edcee4f85a9c29f7c89c210ff.pdf
- https://static.usrfiles.com/ugd/de02f3_b5c03602196c466994a2a8be3affda4a.pdf
- https://static.usrfiles.com/ugd/f1d680_5d8059e8312d4ed294be69c9c0032040.pdf
- https://static.usrfiles.com/ugd/b8c837_c87ea941250c487e8e6f9527c2a4aff2.pdf
- https://static.usrfiles.com/ugd/e4bc37_cf39d47c23134ad8be8cff6c2d81c50b.pdf
- https://static.usrfiles.com/ugd/b88e3d_45c1715d88bd485686d8f10f2cb98b24.pdf
- https://static.usrfiles.com/ugd/9219f8_efa3db1ed7ed4991b3858580b0ea3596.pdf
- https://static.usrfiles.com/ugd/22739b_266f57368f464c71b8c0a7b25901b349.pdf
- https://static.usrfiles.com/ugd/5cf23b_b1b27bff17124427a0be940e9b1d00ba.pdf
- https://static.usrfiles.com/ugd/b8c837_df6601f92c884f0786c7ba4c1e132fd1.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006035.bin` `f58c184f68b995ad0da8cbe459a3cec175ecf173a2d9af8cc41bec679f775b7b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6035	4956 bytes
`font_01_sfnt_off000070f2.bin` `52aac781d709407c1b060e9be643f171d7825ba86c1e4b57efe9e8bc883fe802`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x70F2	10052 bytes

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