PDF malware analysis — malicious · 3c77f4171ece568b

MALICIOUS

PDF

71.0 KB Created: 2021-02-17 05:10:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c914b3ce31e4620b17f557248f316534 SHA-1: 30334d6ee02d33d49ae7929a4b1fb7599c6d7521 SHA-256: 3c77f4171ece568b93dc8c9feada7f669fbb07a7503574488f3cef7152386e0f

104 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains heuristics indicating it is a phishing lure, likely attempting to trick users into clicking embedded links. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were directly extracted, the presence of numerous external URLs, including one that appears to be the primary lure, points towards a phishing campaign.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 5

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
Fake invoice / payment lure low SE_INVOICE_LURE

Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
External URI info PDF_URI

PDF contains an external URL action
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://druttle.ru/wix?keyword=how+to+fill+out+blueline+receipt+book
- https://cdn.sqhk.co/gorokipo/Peagggd/vapuzif.pdf
- https://cdn.sqhk.co/jilelemo/haThfkj/manozijukowelilemenixu.pdf
- https://cdn.sqhk.co/xenudipu/iifhgix/jerebuzumon.pdf
- https://cdn-cms.f-static.net/uploads/4388842/normal_601e67bd70747.pdf
- http://busibear.com/slope_and_linear_equations_worksheetrgybz.pdf
- https://wobomiti.weebly.com/uploads/1/3/4/5/134501920/8038131.pdf
- https://pazopoxe.weebly.com/uploads/1/3/5/2/135293382/34198f880.pdf
- https://static.s123-cdn-static.com/uploads/4481999/normal_5ffa80113aa76.pdf
- http://bluetea.space/41063031485n3suo.pdf
- http://triple-doska6.club/wumuxuihkr3.pdf
- https://cdn.sqhk.co/vevigagexoxa/zOhf3gi/kozunizusivela.pdf
- https://cdn-cms.f-static.net/uploads/4415309/normal_5fdab2c289e97.pdf
- http://kostlike.site/botitosevagimozukomoper7yw1i.pdf
- http://de-bewertung-id2842384.icu/dragon_ball_pipeso6sly.pdf
- https://xefesikixote.weebly.com/uploads/1/3/1/4/131437823/c357203428d45f.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://zerujafulo.rf.gd/wow_assassin_rogue_pvp_guide.pdf
- http://jutesokom.rf.gd/mefakulaxapajozurevikiz.pdf
- http://moposafasamik.rf.gd/california_highway_patrol_citation_number.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000db6d.bin` `6f1bdcc1830f6bdca78f33cdb59e831e067b1664f70ec7e5b574179ba0fe01a8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDB6D	4880 bytes
`font_01_sfnt_off0000ec2b.bin` `ae409fe9b119a2bf215fac10e23c1a83cc5257b211095913c9d38dc675dcc19f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEC2B	10144 bytes

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