PDF malware analysis — malicious · a33610b847ba4ffb

MALICIOUS

PDF

68.5 KB Created: 2021-03-01 17:26:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 6c31a56a0c5fc159ad1f9eec8601358b SHA-1: 2f402a4392491cadd6f1b62364bbd822e3dafb15 SHA-256: a33610b847ba4ffba16f1a7ff49f33ba47d6c4b5275081e4862d430d2b28b1f1

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URI pointing to a URL that mimics a search result for a specific book title, likely as a lure. ClamAV and ML classifiers also flagged this PDF as malicious, indicating a phishing or trojanized document. While no scripts were explicitly extracted, the presence of external URIs and the nature of the PDF content suggest it's designed to trick users into downloading further malicious content.

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://golowaki.ru/wix?keyword=classical+myth+powell+8th+edition+pdf+free
- http://gemubanabugawa.mypressonline.com/gepodidozulasugaf.pdf
- http://wipunemobak.mygamesonline.org/300_common_spanish_words.pdf
- http://betizekaxu.getenjoyment.net/3864392124.pdf
- http://kakafeg.scienceontheweb.net/wixamawutokawibogum.pdf
- http://mavigawika.scienceontheweb.net/10660959482.pdf
- http://tufuwavaziga.mygamesonline.org/probability_practice_questions_with_answers.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/tifuwuw/77778914166.pdf
- https://s3.amazonaws.com/pirofopafu/92044821207.pdf
- http://dukoloxanad.epizy.com/7800276168.pdf
- https://s3.amazonaws.com/mamukawaxatali/android_studio_proxy_settings_in_gradle.pdf
- https://s3.amazonaws.com/pibabopuduj/46401454182.pdf
- https://s3.amazonaws.com/wizidimawag/jebafuvadotilajebomavelaz.pdf
- https://s3.amazonaws.com/dejolavubukugeb/job_interviews_questions_and_answers.pdf
- http://mewozukejos.rf.gd/behavioural_objectives.pdf
- http://zomimek.epizy.com/tuxugokuridovup.pdf
- http://vepibali.rf.gd/mr_bean_movie_720p_dual_audio.pdf
- http://dimizisunope.epizy.com/37754412368.pdf
- http://pewavifasovifuz.epizy.com/robexalagozofod.pdf
- https://s3.amazonaws.com/wutogugej/6210691133.pdf
- http://fokibuzevurir.rf.gd/how_do_you_find_the_geometric_mean_of_a_triangle.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_off0000cea1.bin` `c4326c0fa5dfc305a0d65621d8aa6718346259cf65b787090438fded2a0a0451`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCEA1	5688 bytes
`font_01_sfnt_off0000e1e5.bin` `352073890d9c38f3a708fbd4a0bd94992f0d100d61290188f0eee03eee5fa1c8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE1E5	10152 bytes

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