PDF malware analysis — malicious · b13e6edc1aa65674

MALICIOUS

PDF

74.8 KB Created: 2021-03-03 16:47:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b2f0ef0b58634db46004161ac7e0c364 SHA-1: 9e94e2c649721dabbe8fbef3670e00436eaa575d SHA-256: b13e6edc1aa65674ac8d4d8908c5ac6ffa6b2900e3c520ad32185d95ed214c97

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The document contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. No scripts were extracted, but the presence of an external URI and the overall detection suggest a phishing or social engineering attack.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://zajinet.ru/aws?utm_term=is+it+hard+to+learn+php
- http://bomisedoxu.mywebcommunity.org/napojejaxi.pdf
- https://cdn.sqhk.co/puninuzono/bgjmfjW/knife_throwing_simulator_script.pdf
- http://wozekozexufoxol.scienceontheweb.net/41555790276.pdf
- https://cdn.sqhk.co/vixawutozama/iECggXg/average_starting_salary_mechanical_engineer_texas_a_m.pdf
- https://cdn.sqhk.co/tibakekavero/bgeidif/pool_city_game_free_download_for_pc.pdf
- https://cdn.sqhk.co/duwutawuna/riaYbid/firusipozejogudeji.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://tijopuzotozume.rf.gd/nogegofuzutoxojuvozo.pdf
- https://s3.amazonaws.com/lebaxa/43610940785.pdf
- https://s3.amazonaws.com/laginekux/vewimofopinofovumesikos.pdf
- https://s3.amazonaws.com/mijumomub/nonamogajegisowiweb.pdf
- https://s3.amazonaws.com/gotenukevepunin/cello_sheet_music_for_harry_potter_theme.pdf
- https://s3.amazonaws.com/bibejovixapis/usp_dissolution_guidelines.pdf
- https://s3.amazonaws.com/kasuwevovog/41007776872.pdf
- https://s3.amazonaws.com/luxelula/aznavour_formidable_tab.pdf
- https://s3.amazonaws.com/nagudo/pesafobaxikufigubi.pdf
- https://s3.amazonaws.com/rutufokedizon/82374992901.pdf
- https://s3.amazonaws.com/gowupuzokowuxes/cannot_format_change_card_canon.pdf
- https://s3.amazonaws.com/posufij/bstc_2018_answer_key.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_off0000e9d0.bin` `307ae032b1b35eaad2385e967da641a46f2ce095268ad817aac859bb710a369d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE9D0	4984 bytes
`font_01_sfnt_off0000fab5.bin` `16d8bd015256db4cb2ba8a7f2500c853d021ece14ccae14b8ee50c5e23bc10ec`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFAB5	10544 bytes

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