PDF malware analysis — malicious · 0c102b574d6557c1

MALICIOUS

PDF

43.7 KB Created: 2020-08-30 23:46:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9e92b392d1f260fac68b076377a1f4d4 SHA-1: 6aa8775477b49ee82715da10a3271936ca5f92f3 SHA-256: 0c102b574d6557c12f9b85304ae1822ad7e27d7f7cd598886c6483c99bc711d6

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links, with one prominently pointing to a malicious redirector URL. This suggests an attempt to direct users to a malicious site, likely for phishing or malware distribution. The presence of numerous other links, many pointing to Shopify, indicates a potential link farm strategy to obscure the malicious destination. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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.ru/wix?keyword=protocolo+de+servicio+al+cliente+pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0433/8008/0801/files/spelling_rules_worksheets_ks2.pdf
- https://cdn.shopify.com/s/files/1/0429/1677/4054/files/68993838801.pdf
- https://cdn.shopify.com/s/files/1/0447/1092/0345/files/47965960016.pdf
- https://static.usrfiles.com/ugd/a64c8c_2c87690f2dac4e06827e0c0d4a6ccdd7.pdf
- https://static.usrfiles.com/ugd/353d00_a1cc53377aa34859b0c1a56bf6d374f4.pdf
- https://static.usrfiles.com/ugd/b8c837_d1f77c90893a4412aaa3473ad3b14f38.pdf
- https://static.usrfiles.com/ugd/b50c55_3614ff054cc74066a1eca74215eb3249.pdf
- https://static.usrfiles.com/ugd/b8c837_8a5556bc64c6445db763bc5047ee6aeb.pdf
- https://static.usrfiles.com/ugd/0baf77_3ece64a66f134bc09feeb7ddc1a21c16.pdf
- https://static.usrfiles.com/ugd/d54300_10fe53d8e12a4006b22d21454fa61d80.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_off00006a10.bin` `f3cb1b532682f58a1d19da98a140b185e3b8f09f6e625d9df089d13ee6256948`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6A10	5208 bytes
`font_01_sfnt_off00007bdb.bin` `0e42582403b043549fc42b320b0ab950264340c288d826a4219c80d15804994b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7BDB	11324 bytes

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