Malicious PDF — malware analysis report

Static analysis result for SHA-256 db008854189f05b3…

MALICIOUS

PDF

74.6 KB Created: 2021-03-14 22:18:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffa523aa2f51b4b37323ec81b9f2eda7 SHA-1: 5094b4de43dde56690df5f408fe8a3b3d1135ee9 SHA-256: db008854189f05b32b8027b1b7a9294fed70726144f77eb35b8af5fa59ae525c
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of external URIs and the overall classification suggest this document is designed to trick users into visiting a malicious site, likely as part of a spearphishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://bologen.ru/wix?keyword=uiuc+2020+dean%2527s+list
    • http://losamaresufalu.22web.org/alphabet_learning_worksheets_for_kindergarten.pdf
    • http://moxegelubopidi.sportsontheweb.net/life_application_bible_commentary.pdf
    • http://wezenilokiwuv.iblogger.org/lupepipej.pdf
    • https://cdn.sqhk.co/gugexuje/fgeulLM/bodycon_mini_dress_formal.pdf
    • https://cdn.sqhk.co/nukuzulu/V4iErIU/rasikelolabufuxafesilup.pdf
    • https://cdn.sqhk.co/lapefuxolu/VjPXIhQ/monir.pdf
    • https://cdn.sqhk.co/novimabe/jLoEVgi/cash_app_money_generator_without_human_verification.pdf
    • http://podemufibe.iblogger.org/9570659292.pdf
    • https://cdn.sqhk.co/wiluxuko/igijdtb/rotod.pdf
    • https://cdn.sqhk.co/zimuteraf/eighifH/glowroad_app_download_apkpure.pdf
    • http://komaxinatobofe.medianewsonline.com/tujuximodexajubizam.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sobenikirija.rf.gd/15904360584.pdf
    • https://uploads.strikinglycdn.com/files/fb97b225-a1d5-4eb4-9fb2-d313fdf445a1/netgear_nighthawk_ac1750_vs_ac2600.pdf
    • http://vulegagurof.rf.gd/aircare_whole_house_humidifier_reviews.pdf
    • http://fefomuk.epizy.com/4772827732.pdf
    • https://uploads.strikinglycdn.com/files/c7ecaa51-1617-4225-896e-cf5e0fcc381c/27535285250.pdf
    • http://xomapagovujux.atwebpages.com/rabonifetelojudukuwufovif.pdf
    • https://uploads.strikinglycdn.com/files/b0acda77-a179-468b-9b2a-dd022ad616a5/vusisewukenux.pdf
    • http://madepadejatutof.onlinewebshop.net/eureka_vacuum_cleaner_spare_parts.pdf
    • http://wutejaxevewef.myartsonline.com/how_to_look_up_street_view.pdf
    • https://uploads.strikinglycdn.com/files/792c5960-c4e5-42e8-ab6f-d5743b920db4/shell_script_example_with_for_loop.pdf
    • https://uploads.strikinglycdn.com/files/e8d67eef-632f-4bcf-9d88-41a1d05e52b3/zofoliwubozanijanotanin.pdf
    • http://zaxokejik.rf.gd/craftsman_3x21_belt_sander_drive_belt.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.

FilenameKindSourceSize
font_00_sfnt_off0000e705.bin
e8f3d13e731ee1eced6bc3e6d3cb3da6e53de5ba67cc59043bb2f419e461c457		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE705 5136 bytes
font_01_sfnt_off0000f89a.bin
de90dec552528e8fd9d8cb28fc0fd5b0d376137d010eb3f4cc58109d170a7029		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF89A 10632 bytes

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