PDF malware analysis — malicious · d9e8191d91f9be52

MALICIOUS

PDF

68.7 KB Created: 2021-03-28 17:26:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 4d2806dfa3bac8939d742103dfa0297b SHA-1: aee31fe95bfc3e27223b582e40851d4c10b28406 SHA-256: d9e8191d91f9be52ce09a9e054af305940658fba1648672d09d698014160f035

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The sample is a PDF file flagged by multiple heuristics and a machine learning classifier as malicious, specifically identified as a phishing trojan by ClamAV. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though partially corrupted, contains text related to Outlook app functionality, suggesting a lure to trick users into clicking the malicious link.

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://seumenha.ru/123?utm_term=outlook+app+add+shared+mailbox+android
- http://shopsupergood.site/83373081799u3qvk.pdf
- http://seweripuwas.mywebcommunity.org/psychology_david_g_myers.pdf
- http://jekeluxuto.mywebcommunity.org/54207485489.pdf
- http://fasekafalig.scienceontheweb.net/handbook_on_measurement_assessment_and_evaluation_in_higher_education.pdf
- http://lassituda.online/coleman_hot_tub_pump_cleaning3dohc.pdf
- http://mejumeroxara.mywebcommunity.org/what_colors_mix_to_make_emerald_green.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://fuluxewamotate.atwebpages.com/bimaxebu.pdf
- https://s3.amazonaws.com/tobaziw/14339136655.pdf
- https://s3.amazonaws.com/vebenok/8569432188.pdf
- https://s3.amazonaws.com/lukepepe/suzosugogo.pdf
- http://mawokale.myartsonline.com/how_can_i_edit_file_free_software.pdf
- https://s3.amazonaws.com/lolijexejomak/65470673644.pdf
- https://s3.amazonaws.com/xotomisen/mission_statement_template_microsoft_word.pdf
- http://nowimirozox.atwebpages.com/jinipuworukanemebiduten.pdf
- https://s3.amazonaws.com/xojafemori/choose_number_games_with_answers.pdf
- https://s3.amazonaws.com/zemunomipazikez/fupexakolikovo.pdf
- https://s3.amazonaws.com/gezizefefififa/reaktionsweg_formel_100_km_h.pdf
- https://s3.amazonaws.com/jarawaxanivu/equipment_inspection_report_format_in_excel.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_off0000cdda.bin` `6505daa1536d9e3c3def5484635d59513da4718e569bbe7ce9c3ca00fcec46b7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCDDA	5496 bytes
`font_01_sfnt_off0000e05f.bin` `8cc8cc38640f984f1bc50b5f1559310a8cbd5b766b790d2b0902be9f43e306f8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE05F	10380 bytes

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