PDF malware analysis — malicious · e6f1bfb28d84a1c4

MALICIOUS

PDF

58.2 KB Created: 2021-04-16 14:41:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: f00fec86aa45bd6f3be286a38ec9e2e1 SHA-1: f82885b56fc7a9a5f3a581dfa5fb0bb96c3e45d6 SHA-256: e6f1bfb28d84a1c4ce377f7a5c7464233d629700d705a293fd13ead761343232

184 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or redirection scheme. Heuristics indicate it's a phishing or trojan PDF, and ClamAV confirms it's malicious. The embedded URLs likely serve as lures to malicious sites or to download further payloads.

Machine Learning

Nyx PDF Classifier malicious score 0.8425

Heuristics 5

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.
ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
External URI info PDF_URI

PDF contains an external URL action
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://druttle.ru/strik?utm_term=on+becoming+a+person+book+pdf
- https://cdn.sqhk.co/govuzupikiwe/ffhdRih/ramorogosajuwu.pdf
- http://net-klientov.ru/program_management_office_mission_statement4fwyr.pdf
- https://cdn.sqhk.co/xufojidaju/Kiggd9w/44432307363.pdf
- https://cdn.sqhk.co/nuduniguwufo/shjJC2x/reporters_notebook_pogo.pdf
- http://contentmedialiteracy.com/lol_worlds_pick_em_guidejeis2.pdf
- https://cdn.sqhk.co/kuburarimoku/OMVr8hg/99117296255.pdf
- https://a9864912-ad24-422b-99f3-2d90f7703507.filesusr.com/ugd/d6af85_16338661955c44389d9d404d49424076.pdf?index=true
- https://69b3109a-7cce-4514-9193-d2106d9976ab.filesusr.com/ugd/3c2969_d6bb304d732a423197045761d8e8ec52.pdf?index=true
- https://6593eeda-10fe-4128-810f-cbbc79f0a4f8.filesusr.com/ugd/c0a4bf_c41f11b25a1e4b6182f1fb8323627f51.pdf?index=true
- https://s3.amazonaws.com/xovekolamoxe/problem_solving_worksheets_grade_3.pdf
- https://13ea8442-998f-4f14-ba3b-7f37e53a414c.filesusr.com/ugd/008a9f_3ba36b5500f040d5b02b805750927b36.pdf?index=true
- https://06e27459-8a58-4d01-a48e-f853eab966f6.filesusr.com/ugd/55f1a0_b909c2344afc4a70a2560dcdfe082bb0.pdf?index=true
- https://s3.amazonaws.com/xijuxosisomuna/masterbuilt_electric_smoker_parts_list.pdf
- https://720c7b34-a033-4bf0-83ea-6be17de98aa2.filesusr.com/ugd/03ef8e_f803a91419bc49d89fe01618df67be7c.pdf?index=true
- https://s3.amazonaws.com/tokatefozude/assamese_song_asomi._in.pdf
- https://4edd92ed-4e96-4c3d-a837-a16c7246ae9e.filesusr.com/ugd/7c3149_5690061b9382452f8590645e270f7346.pdf?index=true
- https://4a31e3f8-49e3-4331-b1a9-c0bb7a6b9dbc.filesusr.com/ugd/599f1c_e394e3c0171c485789d95dc41d18df5a.pdf?index=true
- https://00c0516a-c822-4344-a779-6f74e039753d.filesusr.com/ugd/9e41f0_cf6c93f35baa4cb0a79fd3d7685bb6a7.pdf?index=true
- https://s3.amazonaws.com/kelukakeb/66516316385.pdf
- https://94e55d9a-ad7c-4b6b-a54a-a00202ad3087.filesusr.com/ugd/208fd7_f040d6b6e82b4385a9e2c2d1d294fd49.pdf?index=true
- https://s3.amazonaws.com/xozeb/desktop_anime_wallpaper.pdf
- https://ee60c613-3dd1-430d-b711-08e3dcbf0273.filesusr.com/ugd/19ce5d_dee13e0602b9474989de82ed8be420cf.pdf?index=true
- https://d5bea983-5bca-41ba-aae6-6b688785cc77.filesusr.com/ugd/9ec29b_40b88f0ad6bf4300a2a639137c77d984.pdf?index=true
- https://6674166f-eb58-46b1-9d38-a528bc95e02c.filesusr.com/ugd/e38d8e_955d7143391d437aae342808e57e8ac5.pdf?index=true

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