MALICIOUS
286
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1566.002 Spearphishing Link
T1059.007 JavaScript
The sample is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains multiple heuristics indicating phishing and credential theft, specifically impersonating Microsoft. The document body, though obfuscated, suggests a lure related to 'Comptia security sy0-501 certification study guide pdf', likely to trick users into clicking embedded links or downloading further content. The presence of external URIs and a link farm heuristic further supports a malicious intent to redirect users to potentially harmful sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9961
Heuristics 8
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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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Recovery secret / private key request critical SE_SECRET_RECOVERY_LUREDocument requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
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Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISHDocument impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://susutabum.weebly.com/uploads/1/3/4/4/134464128/4805851.pdf.
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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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://zajinet.ru/strik?utm_term=comptia+security%252B+sy0-501+certification+study+guide+pdf PDF link annotation
- http://homeolimp.com/what_does_it_mean_when_there_is_no_dial_tonexoppn.pdfIn PDF document text
- http://rollernefrit.xyz/model_3_owners_manual_europeng0xb.pdfIn PDF document text
- http://zesivez.iblogger.org/83408144698.pdfIn PDF document text
- http://govegejemoluf.iblogger.org/lumog.pdfIn PDF document text
- https://susutabum.weebly.com/uploads/1/3/4/4/134464128/4805851.pdfIn PDF document text
- https://tonukujile.weebly.com/uploads/1/3/1/8/131857071/tebipe.pdfIn PDF document text
- https://ponekuxu.weebly.com/uploads/1/3/4/7/134747949/zifodalajomopu.pdfIn PDF document text
- https://tuwureliw.weebly.com/uploads/1/3/4/1/134108737/wibixazogedofozuxana.pdfIn PDF document text
- http://bettyloustintruckbbq.com/gowimajemarezitexjn7r9.pdfIn PDF document text
- http://rajedat.iblogger.org/digital_marketer_value_journey_worksheet.pdfIn PDF document text
- http://jeruxawi.iblogger.org/zupilasaf.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/0830fbad-4a14-4441-9abe-ca5a4c7aa5b9/google_translate_chinese_characters_not_showing.pdfIn PDF document text
- http://lojagajojib.rf.gd/filtrage_analogique.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6448c2a1-b1f0-4f2f-9cd9-1d01af06e28b/givivezepetejagokel.pdfIn PDF document text
- http://tititogejeda.rf.gd/15541619080.pdfIn PDF document text
- http://gumajixu.rf.gd/6135369002.pdfIn PDF document text
- http://sodunaxa.epizy.com/govusadudemekadigebike.pdfIn PDF document text
- http://naziniri.epizy.com/13203374415.pdfIn PDF document text
- http://pisozew.rf.gd/86434659759.pdfIn PDF document text
- http://widafasamuj.epizy.com/rugby_strength_training_program.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3e34c42f-e3b5-430f-9cf4-856cb62697fe/23385233455.pdfIn PDF document text
- http://bowupezik.epizy.com/xukumaxuxunipado.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
- https://savannah.gnu.org/projects/freefont/In PDF document text
- http://www.gnu.org/licenses/In PDF document text
- http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
- http://scripts.sil.org/OFLIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 5
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0001fa9e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1FA9E | 6424 bytes |
SHA-256: 4455747fda9ac97410526ac3fee3ca643cc61cb592146befb7df79af2604d95b |
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font_01_sfnt_off00020a80.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x20A80 | 5800 bytes |
SHA-256: 133ae91b3a0da54c831156388830762d637f352f98bfb61aea0a2d2d12db1358 |
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font_02_sfnt_off00021e39.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x21E39 | 5756 bytes |
SHA-256: acb1220a1884d355687b4c774927258eefa3d08b42e00f49842c1c6bc2e311fd |
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font_03_sfnt_off000232fd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x232FD | 12500 bytes |
SHA-256: 7f62de74ab48ac6813f6ce67f5f816e3f1d4b4de011fc085f5c4c1f02d8c7c18 |
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font_04_sfnt_off00025da1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x25DA1 | 16324 bytes |
SHA-256: 165de1734ae066c9a0bce27141cfcf16ab8121477340e9b80e3dfd7988481a40 |
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