PDF malware analysis — malicious · 98a4e8ff7644906b

MALICIOUS

PDF

38.3 KB Created: 2020-10-27 01:13:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c26f6167851cbbc846cb682a9350a2e0 SHA-1: 52ea9a6a2ee2579fdf6b9d3cc56054d1d5b2e048 SHA-256: 98a4e8ff7644906be9f6b9e40923fd95eabc34b82aad17d846a1e89eef4fbafd

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with a critical heuristic identifying one as a known malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector identified by heuristics. This suggests the document's primary purpose is to redirect users to malicious infrastructure.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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://ggtraff.ru/strik?keyword=noaa+nws+aviation+turbulence
- https://cdn-cms.f-static.net/uploads/4374700/normal_5f92b5e9e8f7c.pdf
- https://cdn-cms.f-static.net/uploads/4382784/normal_5f93c9841262d.pdf
- https://cdn-cms.f-static.net/uploads/4365599/normal_5f97478ff3840.pdf
- https://cdn-cms.f-static.net/uploads/4366041/normal_5f86fcc09576c.pdf
- https://cdn-cms.f-static.net/uploads/4365582/normal_5f874f52a7a94.pdf
- https://pezujotage.weebly.com/uploads/1/3/4/3/134318684/kunabodebe.pdf
- https://rofexigu.weebly.com/uploads/1/3/0/7/130738805/5acbe9.pdf
- https://vaxedokumam.weebly.com/uploads/1/3/4/2/134266394/4463623.pdf
- https://riragojefo.weebly.com/uploads/1/3/1/8/131857115/zamepagamejoxer.pdf
- https://zadumeredevasax.weebly.com/uploads/1/3/1/4/131453870/2580885.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://uploads.strikinglycdn.com/files/08b6b461-3a70-4add-8c10-906db27331d6/99598183303.pdf
- https://uploads.strikinglycdn.com/files/15f47111-bc04-472d-8990-141d10c5dc60/37371823526.pdf
- https://uploads.strikinglycdn.com/files/507a3647-cdcf-4ff7-92dc-41addfa131fc/kesirlerde_blme_ilemi_rnekleri.pdf
- https://uploads.strikinglycdn.com/files/d6418015-8958-4049-9a1b-a256a865a65f/tikodaxojoreke.pdf
- https://uploads.strikinglycdn.com/files/995bef58-1bc3-40c5-9949-af18ab20b2a2/wufovinibetigefe.pdf
- https://uploads.strikinglycdn.com/files/df849ce3-05b3-4c01-a4d6-8205912c406f/zebigazovijel.pdf
- https://uploads.strikinglycdn.com/files/fe3bb30a-7a9c-492c-8a72-60382566323b/8552437512.pdf
- https://uploads.strikinglycdn.com/files/6974f6e4-3409-4f10-af0c-67d11cda9491/biology_science_for_life_4th_edition.pdf
- https://uploads.strikinglycdn.com/files/f45735d6-4eeb-4944-8e92-1ca722354f5a/44581394313.pdf
- http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000861a.bin` `3a631be9142f52d102d39632908278d3f40f97cf7d678dbc832b5661519d28d4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x861A	5056 bytes

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