Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9e33f73cee57f18…

MALICIOUS

PDF

65.9 KB Created: 2021-04-04 03:35:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a570713d6e704a418347106b03b0473d SHA-1: 1ecfc5a5ffc84d957037b06c19a170414be0031e SHA-256: a9e33f73cee57f188fd28837b4ff09e9d667097457b3f7dbdbeaece50affbf72
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL, https://midufefew.ru/award?keyword=biophysical+chemistry+cantor+schimmel+pdf, suggests a phishing or credential harvesting attempt by luring the user with a seemingly relevant document title. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing lure, likely intended to lead the user to download further malicious content or provide sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://midufefew.ru/award?keyword=biophysical+chemistry+cantor+schimmel+pdf
    • https://cdn.sqhk.co/tikisudolo/3hhWjg7/tawoniwe.pdf
    • http://betflixguvenilirmi.com/64345061394fx15f.pdf
    • https://cdn.sqhk.co/gitopedevid/ihEAiaF/monkey_wrench_smokehouse_travelers_rest_sc.pdf
    • https://cdn.sqhk.co/rotefuver/77geejd/student_beans_missguided.pdf
    • https://cdn-cms.f-static.net/uploads/4393900/normal_5feaee95d2b6e.pdf
    • https://cdn-cms.f-static.net/uploads/4494166/normal_604760ec196ca.pdf
    • https://cdn-cms.f-static.net/uploads/4411512/normal_5fd0d5460e320.pdf
    • https://cdn.sqhk.co/fogobewataja/jhfjjgg/classroom_management_strategies_for_secondary_school.pdf
    • http://detonic-ufficiale.website/lerasepurukirojexapelaxwf7vy.pdf
    • https://cdn-cms.f-static.net/uploads/4493569/normal_604b96da35718.pdf
    • https://cdn.sqhk.co/disanefamu/igDiagh/17823183706.pdf
    • https://cdn-cms.f-static.net/uploads/4455194/normal_602d7a2c30b6b.pdf
    • https://cdn.sqhk.co/masamiwe/fgjlqfG/roller_coaster_games_theme_park_rides.pdf
    • http://1xbets-reg.site/kamevomefokirebasimoso3gng.pdf
    • http://xoziduso.mypressonline.com/ccnp_certification_syllabus.pdf
    • http://copriyghtconfirmed.com/carnitina_subcutanea9edkl.pdf
    • https://cdn.sqhk.co/xugiwatokax/OonG3if/chelsea_vs_liverpool_super_cup_highlights.pdf
    • https://cdn.sqhk.co/powurejur/hgiavic/devakev.pdf
    • http://penageli.getenjoyment.net/78380712868.pdf
    • https://cdn.sqhk.co/vavetiset/MgfC2pi/zasalitiwedugimuva.pdf
    • http://rbqjkwklnd.xyz/viper_car_alarm_customer_servicegwm7v.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wanasuvedigo/wabasedamukanufulupirad.pdf
    • http://donijexufenu.onlinewebshop.net/dragon_age_origins_companions.pdf
    • https://s3.amazonaws.com/fapaga/78763517123.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_off0000c61d.bin
3ddaf5e7e4ebfef68c4ec51b28c2d0daa7c67763af064099ba0891e906cd513e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC61D 5544 bytes
font_01_sfnt_off0000d8d4.bin
f85c575388da1db8ea961a27f30f3b2de4e4511637384528d42e330a9cb9aefa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD8D4 9752 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.