PDF malware analysis — malicious · ec5f272a2667218f

MALICIOUS

PDF

77.8 KB Created: 2021-04-18 19:18:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: cf4abe0a297be9af35cfa8fbffb10e0e SHA-1: d10c78efeb46f2de676e8d3e905f0b4c1d3e18d1 SHA-256: ec5f272a2667218fc40ffc90a3c7110e12b0d7e2f00eacec038f8af81a0ef944

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The embedded URL `https://zajinet.ru/strik?utm_term=how+much+does+rslogix+500+software+cost` suggests a phishing lure related to software costs. Although no scripts were explicitly extracted, the PDF structure and the nature of the URL indicate a likely attempt to redirect the user to a malicious site for further exploitation.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 4

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

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://zajinet.ru/strik?utm_term=how+much+does+rslogix+500+software+cost
- https://cdn-cms.f-static.net/uploads/4470027/normal_602579d106d71.pdf
- https://static.s123-cdn-static.com/uploads/4470218/normal_5feb70457a44d.pdf
- http://jonipifenukiz.mygamesonline.org/dapegobuledobipaluvepeku.pdf
- https://cdn-cms.f-static.net/uploads/4372696/normal_5fd85111bc74b.pdf
- https://cdn.sqhk.co/sewuvavimebi/jehgjdC/personal_assistant_offline_apk.pdf
- http://mupifojoxur.medianewsonline.com/human_organs_systems.pdf
- https://cdn.sqhk.co/letarezetap/CKsihKb/40504930244.pdf
- http://romakipojaxu.mygamesonline.org/tosolonezapinujepe.pdf
- https://cdn.sqhk.co/nedupugifuka/iiaugiB/bauer_roller_hockey_skates_near_me.pdf
- https://cdn-cms.f-static.net/uploads/4456705/normal_5fe9d6eece812.pdf
- http://mesutilixuta.sportsontheweb.net/rodupegibuka.pdf
- https://static.s123-cdn-static.com/uploads/4426270/normal_5fe12a920a7fa.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://sabixukavizom.myartsonline.com/38284183969.pdf
- http://sazurufupamaxa.myartsonline.com/29835263289.pdf
- http://gutekuretejapoj.onlinewebshop.net/45485973405.pdf
- http://litabasiker.onlinewebshop.net/mekodada.pdf
- http://bogalibamadom.myartsonline.com/xelozobibidokifegubuzav.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_off0000ef14.bin` `e3103e9ea5c642be822430143621fcc90d6af4d40a75a7f830e09ad47a2c1d08`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEF14	5824 bytes
`font_01_sfnt_off000102d5.bin` `b2baa15b1666ed36093f276e4a32a3ef96854e77e52830e302b5cd2ee550d603`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x102D5	11172 bytes

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