PDF malware analysis — malicious · 01cc282eb46d2cbf

MALICIOUS

PDF

33.2 KB Created: 2020-08-20 04:45:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a61a36b5b060b302543b514b9115b2ac SHA-1: bd77d1477b6b80558019bc4549cc0df56d31c3b0 SHA-256: 01cc282eb46d2cbf496aecec8a99d3c6000aaea5e297010864972c1c3232d3c0

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination of the malicious payload. The document also hosts a large number of links to other PDFs, suggesting a link farm or SEO poisoning attempt. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs supports a phishing or redirection attack pattern.

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/pify?keyword=icon+calendar+blue
- http://files.cameronsuarez.com/uploads/1/3/1/6/131637257/2921695.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0437/3676/0485/files/google_backup_android_to_iphone.pdf
- https://cdn.shopify.com/s/files/1/0433/6995/5486/files/95728422891.pdf
- https://cdn.shopify.com/s/files/1/0430/3536/1442/files/4533404295.pdf
- https://cdn.shopify.com/s/files/1/0440/8039/8486/files/chronic_bronchitis_and_emphysema.pdf
- https://cdn.shopify.com/s/files/1/0451/0511/9397/files/creep_guitar_tab.pdf
- https://cdn.shopify.com/s/files/1/0431/3631/9639/files/41855322545.pdf
- https://cdn.shopify.com/s/files/1/0428/0100/4707/files/statistical_methods_by_s._p._gupta_free.pdf
- https://cdn.shopify.com/s/files/1/0428/4055/5687/files/fuduferar.pdf
- https://cdn.shopify.com/s/files/1/0435/7432/9499/files/fowinerewesuvesufol.pdf
- https://cdn.shopify.com/s/files/1/0428/0057/8723/files/jefavoz.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_off00004709.bin` `da42a43c5a000ef140199f247c4a3a95dafb5de14543f4a92c19495b83a7e701`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4709	4832 bytes
`font_01_sfnt_off00005771.bin` `0d5fb13479241d3acb051483b535034cb27e787384a53921e142c5d09719889c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5771	9672 bytes

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