PDF malware analysis — malicious · 49bf3645050956a4

MALICIOUS

PDF

75.2 KB Created: 2021-03-01 00:50:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22

MD5: 9606ebce17470ff31a0aedceecaf3c3f SHA-1: bf41686cd24b7c2d1cb7990c32018db19947bb06 SHA-256: 49bf3645050956a4a2d33454f6128a6dfee3b9cd42247dd5eb0b061d40d8822e

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by ML classifiers and ClamAV, and contains an embedded URI pointing to a suspicious domain. The document body, though heavily obfuscated, suggests a lure related to educational materials. The presence of multiple unknown URLs further supports 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://jottigo.ru/strik?utm_term=word+study+and+spelling+practice+book+grade+4 PDF link annotation
- http://hhizmet.com/xusivojtd38r.pdfIn PDF document text
- http://antonioit.fun/ragnarok_m_eternal_love_labyrinth_forest_guidep7mji.pdfIn PDF document text
- http://kukushpa.fun/cms-1450_claim_formbpf1u.pdfIn PDF document text
- http://spindlndou.space/35428063019gl1c2.pdfIn PDF document text
- http://jumpfs.space/crochet_books_for_beginners_free_downloadzd1wz.pdfIn PDF document text
- http://hookup153.site/87938444454n18uc.pdfIn PDF document text
- http://sk-anker.ru/libenawawoderosovidkucze.pdfIn PDF document text
- https://cdn.sqhk.co/navuwamas/ggQeshi/moran.pdfIn PDF document text
- https://cdn.sqhk.co/joduragenep/d5jdgf1/43629919528.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/kotodur/deewani_mastani_song_raagsong.pdfIn PDF document text
- https://s3.amazonaws.com/wutisigila/string_concat_c_performance.pdfIn PDF document text
- https://s3.amazonaws.com/kavifunaruvi/7722470093.pdfIn PDF document text
- https://s3.amazonaws.com/teximikamukubo/nukijipegosojawanikemepe.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
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e6c6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE6C6	5648 bytes
SHA-256: `ef41b2fc62c61b6fae0836ae19f474ff52d109a56ef20cbd5b17caa1d84779ff`
`font_01_sfnt_off0000fa2e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFA2E	10920 bytes
SHA-256: `d534f45333f2bdd476737750c3a8d047f3688c20db2844961b55abc8a0a771cd`

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