PDF malware analysis — malicious · 81ac4a0bed018c6d

MALICIOUS

PDF

41.5 KB Created: 2020-09-01 05:19:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 7fa72116b13c71b9a4e3224c4805564e SHA-1: f11d9dfdee52614b9913afe93884ed1e040a8d33 SHA-256: 81ac4a0bed018c6df8f33209a181b902d82351a510d1999ec27dc525c2eb807b

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to a redirector URL known to be malicious. The ML classifier also strongly flagged this PDF as malicious. The primary malicious URL identified is ttraff.cc, which is likely used to distribute further payloads or lead to phishing sites.

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.cc/wix?keyword=problem+solving+model+pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/b8c837_7e39c992a4b74e0f9d33056ae11eda31.pdf
- https://static.usrfiles.com/ugd/77d535_332ed3b5408c4edc82bb66b69b000d0f.pdf
- https://static.usrfiles.com/ugd/b8c837_0abcaceee78f4e7dbff6621253b4b752.pdf
- https://static.usrfiles.com/ugd/e643da_9602d7ec893b41ffa0af2f3860fe411d.pdf
- https://static.usrfiles.com/ugd/b8c837_59b09932d81247ee9886183dbe279cfc.pdf
- https://static.usrfiles.com/ugd/b8c837_4a10ce090e854ed3947ec2c181d10032.pdf
- https://static.usrfiles.com/ugd/d5415a_adc04ab2e286485f89944d6f352d38f0.pdf
- https://static.usrfiles.com/ugd/b58d21_8573960ec02940c6a2b3d48fee8abb2b.pdf
- https://cdn.shopify.com/s/files/1/0429/7470/7868/files/grid-_template-_columns.pdf
- https://cdn.shopify.com/s/files/1/0432/3731/0632/files/assassins_creed_3_mods.pdf
- https://cdn.shopify.com/s/files/1/0440/5107/1126/files/30257350595.pdf
- https://cdn.shopify.com/s/files/1/0434/4443/7144/files/60981113128.pdf
- https://cdn.shopify.com/s/files/1/0432/0935/9520/files/86891480728.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_off0000641c.bin` `fb2223a21009534ae10704676eb4ebaeab22e033b773c9f279fc6ecab0683d7e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x641C	5352 bytes
`font_01_sfnt_off00007640.bin` `aef5bf9fb26298cef56d5619c7bad2222d1acd816ab5e6029ec07aadbc419a26`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7640	10300 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.