PDF malware analysis — malicious · 160a2b2bbc95d999

MALICIOUS

PDF

37.9 KB Created: 2020-08-31 18:05:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: df08fc8c8585164fad372c81839628f5 SHA-1: 70553385046799955430f57c20916fea669f5803 SHA-256: 160a2b2bbc95d9993adb6f197be8ddaab9963bf61507d4833749ef751451f8ed

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links, one of which, 'https://ttraff.com/pify?keyword=cakewalk+music+creator+le', is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain references to software and URLs, suggesting a lure to download or access malicious content. The ML classifier strongly indicates maliciousness, supporting the attack pattern of using a seemingly legitimate document to redirect users to harmful infrastructure.

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/pify?keyword=cakewalk+music+creator+le
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/6c032c_bbdfbddd7cbe4a2d9a4fb3e4b7450d42.pdf
- https://static.usrfiles.com/ugd/6d59ab_d2798e5152004470b11efabc07325d10.pdf
- https://static.usrfiles.com/ugd/d01287_4a46c603ebde4f0fa1ad4a03797f8cee.pdf
- https://static.usrfiles.com/ugd/724fb5_ba5b26c9741a4b899a1f5c65de6ce6b5.pdf
- https://static.usrfiles.com/ugd/b8c837_e89146f57aa2472695e07727a6b9bb96.pdf
- https://cdn.shopify.com/s/files/1/0435/1636/2920/files/ayurvedic_medicinal_plants_and_their_uses.pdf
- https://static.usrfiles.com/ugd/eda9ba_f05d336373d34195aac3856213979d1c.pdf
- https://static.usrfiles.com/ugd/b8c837_f233452c5c7f4ad3997400f5b8f625a5.pdf
- https://static.usrfiles.com/ugd/19ce5d_6411ba06336a426cb9f3ec7fc3401e9e.pdf
- https://static.usrfiles.com/ugd/8cbfce_b133672ff27a481e9ceed271e3365304.pdf
- https://static.usrfiles.com/ugd/850f07_5572e15d0b0d4ae68f58b4d27a9b5d86.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/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00005609.bin` `4ce6aff3fb78704fc37395d86e94511f18d55967f70db4224376168e59542730`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5609	5004 bytes
`font_01_sfnt_off00006709.bin` `edbfe7b80bea740b270f7ee337c15f525ed78c80304d88db9844f55011479305`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6709	10564 bytes

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