PDF malware analysis — malicious · 030449e1dc034b3b

MALICIOUS

PDF

44.9 KB Created: 2020-09-03 10:12:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 8fef01d827fcdab7d458ef156a2cb384 SHA-1: f8540fbfb72ca5089d9f35ee19074cd592aa0a5a SHA-256: 030449e1dc034b3bd8ef5089a99360bd9eb44326dcb0764a8dc8c9d2495beac9

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a link farm designed to redirect users to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also strongly flagged this document as malicious. The embedded links likely serve to distribute further malware 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.link/wix?keyword=billboard+hot+2018
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/b8c837_9f72ec573f884ae893bda899ac3d085f.pdf
- https://static.usrfiles.com/ugd/e5cbe5_aa9c44daa33a4a2da4a1cb0ca220085d.pdf
- https://static.usrfiles.com/ugd/fb83f1_0d77135c60d34be3a56b6d43cc0bac72.pdf
- https://static.usrfiles.com/ugd/5befcb_a626a34a8c2344a3a4d69b1ac2d3b6a1.pdf
- https://static.usrfiles.com/ugd/b8c837_52b1f7723aae4e51b8b7a0f5db87dec4.pdf
- https://static.usrfiles.com/ugd/822ecd_9ade3470b355420ea64499bf40d629aa.pdf
- https://static.usrfiles.com/ugd/105a8c_f772f940309845748d5eaf517ed8dedf.pdf
- https://static.usrfiles.com/ugd/5befcb_5d73ac1ebaa64077bab5f15a8f3e58a3.pdf
- https://static.usrfiles.com/ugd/ca300b_796ac15745344dc0a841306d329f48d5.pdf
- https://static.usrfiles.com/ugd/b8c837_dcec95e570a54392941df6eb90482fd5.pdf
- https://cdn.shopify.com/s/files/1/0436/2564/4192/files/6902603980.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/girotimovu.pdf
- https://cdn.shopify.com/s/files/1/0437/9122/0887/files/77459911579.pdf
- https://cdn.shopify.com/s/files/1/0432/3488/5792/files/xorafo.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_off00006fbc.bin` `897ae92efa082678735402489801f8ff2475ba5b129a30334ff3ba295e676ee8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6FBC	5444 bytes
`font_01_sfnt_off00008234.bin` `d026e2c4742081da2b30758537f660b780e3eec1375e5241cdfe62a33cce71ac`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8234	10824 bytes

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