PDF malware analysis — malicious · d43491ec61e867bc

MALICIOUS

PDF

67.2 KB Created: 2021-02-24 21:34:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a27a5144b8b377a03d64613c08cb4a8b SHA-1: a8f4554006a5d92cacb126cd43aac95b83dee0c6 SHA-256: d43491ec61e867bc6df81889db0089e46b88d6fb413ae86c132576653cb058b4

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. It contains an embedded URI pointing to 'leonvi.ru', which is likely used to redirect the user to a malicious site. Although no scripts were explicitly extracted, the presence of embedded URLs and the ML/ClamAV detections strongly suggest a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/123?utm_term=sears+kenmore+central+vacuum+parts
- https://cdn.sqhk.co/gujowaxexag/qhb2iid/79078188020.pdf
- https://cdn.sqhk.co/wosipuvetot/pjdgjdO/bivalanokurav.pdf
- https://cdn.sqhk.co/zifeduwa/bjexXhe/miranda_lambert_bluebird_lyrics.pdf
- https://cdn-cms.f-static.net/uploads/4468823/normal_6025bb73684e4.pdf
- https://cdn.sqhk.co/zudilubal/gcADhgA/87338013114.pdf
- https://cdn.sqhk.co/nekuripafi/jfzgihc/jegazavugisete.pdf
- https://cdn-cms.f-static.net/uploads/4380522/normal_6010e8582a0a3.pdf
- https://cdn.sqhk.co/takejirasomu/hcyggig/5757537512.pdf
- http://fofikotopavabe.iblogger.org/81521178715.pdf
- https://static.s123-cdn-static.com/uploads/4393508/normal_5ffff9d74041e.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://kimovene.epizy.com/how_to_use_two_way_bike_pump.pdf
- https://s3.amazonaws.com/tufitijinexu/49978876817.pdf
- https://s3.amazonaws.com/novifamigot/aur_pyaar_ho_gaya_hd_movie.pdf
- https://s3.amazonaws.com/gizonukorad/geometry_triangle_congruence_proofs_answers.pdf
- https://s3.amazonaws.com/pazerogasarinu/arthrobacter_globiformis_atcc.pdf
- https://s3.amazonaws.com/zodererezuzuxi/bowmaster_mod_apk_ios.pdf
- http://taxifegizuni.epizy.com/61232153840.pdf
- http://xupikilagi.rf.gd/19609208504.pdf
- https://s3.amazonaws.com/zoxewudunigus/wopor.pdf
- https://s3.amazonaws.com/rekorewexidiwo/35960007350.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_off0000cb6b.bin` `57b08ebcd08983819885fd1f45e45d18172a4d84dd3f263a08d63f4525c4f265`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCB6B	5304 bytes
`font_01_sfnt_off0000dd6e.bin` `2480cf60c0357a4f4ef7d709b00dbe7a077b15b53ac10de7860bcdbc8cb37bb1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDD6E	10160 bytes

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