PDF malware analysis — malicious · f466353dc5af65cd

MALICIOUS

PDF

78.8 KB Created: 2021-01-23 17:54:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: b70ae97486114296f61e42c0798683e5 SHA-1: 8be26ef1f13d5927a679832581fb615ae23304a8 SHA-256: f466353dc5af65cd88a612229947f4d1a5a101d915d0cad84ab12db895c16a01

254 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file contains numerous links to external sites, many of which are flagged as malicious redirectors or part of a link farm. The heuristic 'SE_SECURITY_BYPASS' indicates the document attempts to instruct the user to disable security software, a common tactic for malware delivery. The ClamAV detection and ML classifier further support its malicious nature, suggesting it's designed to exploit vulnerabilities or trick users into downloading further malicious content.

Machine Learning

Nyx PDF Classifier malicious score 0.9994

Heuristics 6

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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.
Security software disable instruction high SE_SECURITY_BYPASS

Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
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://ggtraff.ru/wb?keyword=paradox%20launcher%20game%20executable%20is%20invalid In PDF document text
- https://static.s123-cdn-static.com/uploads/4451027/normal_5fc8ed9f2cfc9.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4424025/normal_5fee254fd2b77.pdfIn PDF document text
- https://cdn.sqhk.co/tinolefowi/ejfieia/28017091984.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412173/normal_600bf982d9d63.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4418362/normal_5ff215d65de21.pdfIn PDF document text
- https://wuganinaviset.weebly.com/uploads/1/3/1/8/131871642/xojumanat-pijopoman.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4408583/normal_6001588ea012f.pdfIn PDF document text
- https://lelunoforonu.weebly.com/uploads/1/3/1/6/131606056/munoluxumoderolepe.pdfIn PDF document text
- https://cdn.sqhk.co/zenetofuma/cjijeCC/bob_s_world_2_super_jungle_adventure.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4465142/normal_5ffeb4c794c39.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4495985/normal_5fe3edbbb5629.pdfIn PDF document text
- https://cdn.sqhk.co/pubodegosog/idjdO0j/launchpad_mcquack_family_guy.pdfIn PDF document text
- https://cdn.sqhk.co/borefigux/jfhbfia/pagitupa.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4402940/normal_600adf4915fbe.pdfIn PDF document text
- https://nofemifi.weebly.com/uploads/1/3/2/7/132710694/7535789.pdfIn PDF document text
- https://cdn.sqhk.co/nizekidido/7Y9jiCB/agora_web_video_call_example.pdfIn PDF document text
- http://fepafotejidug.iblogger.org/chrysler_voyager_2007_user_manual.pdfIn PDF document text
- https://poxatekegevu.weebly.com/uploads/1/3/4/7/134753674/telafavofa-kebovof-netak-wazalawepavago.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/buponuwebi/alphabet_cursive_writing_worksheets.pdfIn PDF document text
- https://s3.amazonaws.com/zesotat/up_sales_tax_c_form_verification.pdfIn PDF document text
- http://lijazujarakowom.epizy.com/sokugesodanesu.pdfIn PDF document text
- https://s3.amazonaws.com/tisegovofu/48372264229.pdfIn PDF document text
- https://s3.amazonaws.com/lopeteb/cadillacs_and_dinosaurs_3_apk.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f39d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF39D	5624 bytes
SHA-256: `e8f3584d59a08ef812aeaf3f6be0c9bd133eb0d14a6550012324046c1e41200b`
`font_01_sfnt_off00010695.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10695	11452 bytes
SHA-256: `a0be5138c6bbf7d424cfe53a51aa0ba33ae34694c1bdae15d55f16feaf6d56d1`

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