PDF malware analysis — malicious · dd76f86095de09c7

MALICIOUS

PDF

77.1 KB Created: 2021-04-29 11:28:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 1ddf0aba0e00b0a06b07a202cf86047e SHA-1: 957e254515d69ed0ed16eba95d8ae0d3289eadc4 SHA-256: dd76f86095de09c76ee4a52190a88e0f5e77e1567d8e0118945d64422aef6eb5

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 a suspicious domain, likely intended to deliver a malicious payload or redirect the user to a phishing site. The document body, though partially obfuscated, suggests a lure related to 'Descartes meditations summary'.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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://kuzutuzo.ru/strik?utm_term=descartes+meditations+summary+1+and+2
- http://xogumilagu.iblogger.org/47355332820.pdf
- http://pixilapusir.22web.org/sociedad_anonima_promotora_de_inversion_bursatil.pdf
- https://cdn.sqhk.co/suxumeva/khjc0jh/playhouse_bar_norwich.pdf
- http://bibajif.22web.org/academic_english_writing.pdf
- http://lefofusi.22web.org/ribopoduteremevefupej.pdf
- https://cdn.sqhk.co/xalibolopov/Eqic1av/91392330225.pdf
- https://cdn.sqhk.co/wepurodapike/LHWfZgf/parent_plus_loan_rates_2018.pdf
- https://cdn.sqhk.co/segisaxa/nnjgghV/valopawagokiwugi.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://uploads.strikinglycdn.com/files/85a8ce93-c58b-42a2-bd6d-4bf11b1a2828/folojoruroxexopagu.pdf
- http://timusirekinamiz.rf.gd/curva_de_crecimiento_bacteriano_fases.pdf
- https://s3.amazonaws.com/makumapikeze/81468443511.pdf
- https://uploads.strikinglycdn.com/files/58f2988e-063c-4884-b535-6028c29fa4dc/59730492807.pdf
- http://bobupeg.rf.gd/4747587875.pdf
- https://s3.amazonaws.com/gudukupir/astro_universe_free.pdf
- https://uploads.strikinglycdn.com/files/2b11288c-49d4-4dae-96f5-ada69be69bf9/what_is_the_mechanical_efficiency_of_an_engine.pdf
- https://s3.amazonaws.com/vufuzewasi/acrobat_reader_mac_edit.pdf
- https://s3.amazonaws.com/gotenukevepunin/53838652512.pdf
- http://nelojodopon.epizy.com/zubufimiwukirepolezafas.pdf
- http://delasasapujix.rf.gd/63899971331.pdf
- http://kikebunubalexu.rf.gd/21234715136.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_off0000f2c7.bin` `653e09d3e72c9b0ad06e2029aaac28630e18be31089c5b821f7f6147fb9f748d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF2C7	5336 bytes
`font_01_sfnt_off000104e8.bin` `21ee703755fbf0f4fc39c707d2747a0f1b2bb104579b29c223ffaf3eb062ff02`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x104E8	10212 bytes

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