PDF malware analysis — malicious · 80df57a869cb3520

MALICIOUS

PDF

45.2 KB Created: 2020-09-01 03:05:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 0116ce48313f396ea0d4fa55163f579e SHA-1: 12907855a99ba0c76936f0ca41e51bfb00811d20 SHA-256: 80df57a869cb3520c36d63d889ea04ad99898de1a53867be62efd025672bf4cc

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=cd+template+label'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on static.usrfiles.com. The document body text, though heavily obfuscated, contains the string 'Cd template label', suggesting a lure. The primary malicious IOC is the redirector URL, which is likely used to funnel victims to a phishing or scam site.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

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.
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/pify?keyword=cd+template+label
- https://static.usrfiles.com/ugd/97634b_c06aa56f146a4986a124e72e8808f752.pdf
- https://static.usrfiles.com/ugd/df73ab_c3134962213f46429be2ba735a210cb6.pdf
- https://static.usrfiles.com/ugd/0ebc1f_7afe165f51a8495c8092b34d274575b1.pdf
- https://static.usrfiles.com/ugd/67e251_013a7cccd60d42f5955ea0830b86eb72.pdf
- https://static.usrfiles.com/ugd/b8c837_0e31703808bf4874b7dd69aadd26b9a4.pdf
- https://cdn.shopify.com/s/files/1/0435/3484/4059/files/da_form_3953.pdf
- https://cdn.shopify.com/s/files/1/0433/7998/2492/files/63427644664.pdf
- https://cdn.shopify.com/s/files/1/0436/8115/3177/files/panuguduvulawodu.pdf
- https://cdn.shopify.com/s/files/1/0431/0204/4316/files/garuk.pdf
- https://static.usrfiles.com/ugd/ca300b_bb4357f61be04099aed8324c393f00c5.pdf
- https://static.usrfiles.com/ugd/c618e9_f13f5536f53043b7b3f472938246d60b.pdf
- https://static.usrfiles.com/ugd/67f5f7_ccc64f828084416dab21ef08beba420d.pdf
- https://static.usrfiles.com/ugd/0ad6c7_69244837b35a4a7abbd6fb83b5093652.pdf
- https://static.usrfiles.com/ugd/a48928_08442755a9834ebaa38ad2845802e6a2.pdf
- https://static.usrfiles.com/ugd/a771bd_abbaa9b58bae4db8a7769931fc36aeb0.pdf
- https://static.usrfiles.com/ugd/b8c837_f218264edc8349bebdb67d6bf3c6ba3e.pdf
- https://static.usrfiles.com/ugd/b8c837_590b5e65201b431d8452dcceb3ed0810.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_off00006992.bin` `228118fdfa7808488f1cc6e55cbae55d2389bfdce26c83d40726817b68652478`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6992	4876 bytes
`font_01_sfnt_off00007a07.bin` `75b8bd2ab5f622e8f550172e3975a7b2ee779766763cbe30d8c94a0c80170a7e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7A07	14760 bytes

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