MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a large number of external links, many pointing to disposable domains, suggesting a link farm or phishing operation. The document body, though heavily corrupted, contains references to 'Microsoft excel math formulas cheat sheet' and 'wkhtmltopdf', indicating a lure to disguise the malicious intent. The presence of numerous external URIs suggests the primary goal is to redirect the user to potentially malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall 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.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall 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.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe 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.
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Embedded URL info EMBEDDED_URLOne 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://golowaki.ru/strik?utm_term=microsoft+excel+math+formulas+cheat+sheet PDF link annotation
- https://cdn.sqhk.co/lilapanorup/wUfjaer/biteki.pdfIn PDF document text
- http://smeh-mif.space/breakup_party_hd_video_song_pagalworldcdd20.pdfIn PDF document text
- https://cdn.sqhk.co/xawobovuji/hdSf4xq/49772477587.pdfIn PDF document text
- https://cdn.sqhk.co/jogepirar/qRhfjaE/skywars_servers_with_bad_anticheat.pdfIn PDF document text
- http://shmelev.pro/zoxomp3cy3.pdfIn PDF document text
- https://cdn.sqhk.co/feduvefas/Oij7HkL/starz_movies_list_april_2020.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4446635/normal_5fe3032fc06ac.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387430/normal_6061357601045.pdfIn PDF document text
- http://alsamcctv.com/what_does_ol_mean_on_a_whirlpool_cabrio_washermu7wg.pdfIn PDF document text
- https://cdn.sqhk.co/dobexesi/bhihWRM/subject_and_predicate_worksheets_grade_5.pdfIn PDF document text
- https://cdn.sqhk.co/gogerazina/jcgcULd/huey_lewis_albums_list.pdfIn PDF document text
- https://cdn.sqhk.co/rumoligodo/ibijOqm/joycon_droid_app_amiibo.pdfIn PDF document text
- https://cdn.sqhk.co/ragekasa/lAGhcjg/41713782139.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://5d9de69b-f80b-44d6-9c2d-9027806fef0b.filesusr.com/ugd/e26ad2_6407bd0e66b545cda15d1cba50e56409.pdf?index=trueIn PDF document text
- https://a49a6154-edc8-4132-95a2-c7bb8d673fe9.filesusr.com/ugd/551169_b52b348dd998401884167c779d7c11b3.pdf?index=trueIn PDF document text
- https://62dace35-232c-43a2-b3e8-6cf19ad57148.filesusr.com/ugd/42ae31_a35e54792db940cd96be16ffb69c219e.pdf?index=trueIn PDF document text
- http://zinizebaki.epizy.com/43206687160.pdfIn PDF document text
- http://futepukunodur.rf.gd/shoulder_active_release_technique.pdfIn PDF document text
- https://ff102949-4c65-4b7b-925c-ea9a98d885fa.filesusr.com/ugd/7a16bb_3850dff2aed942bc9896174a7613560d.pdf?index=trueIn PDF document text
- http://noxesufod.epizy.com/33789009030.pdfIn PDF document text
- http://kupavojos.epizy.com/85574496527.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_off0000f09d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF09D | 5192 bytes |
SHA-256: ec4e97b5337fa52548310b4a97ddc264bf7f2aa25e0cf1b6df8f20068ea798b1 |
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font_01_sfnt_off0001022b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1022B | 11100 bytes |
SHA-256: d3715a8ab45570e814d35c92dad57099926e17fdd0e10938967866d534560c0b |
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