Malicious PDF — malware analysis report

Static analysis result for SHA-256 45cd2046b79dc51c…

MALICIOUS

PDF

72.1 KB Created: 2021-03-12 01:39:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 9ba2a2372a9dec2a4e5d4a0332fa089b SHA-1: e563af10693e73f4c2323857df776a5176d04f4e SHA-256: 45cd2046b79dc51cfacf26cc180217685e6630395a26b4d8cf27bcd68735bbe3
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains text related to a school calendar search, likely serving as a lure to direct the user to the embedded URL. The embedded URL itself is suspicious and associated with a search query, suggesting a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jacksth.ru/wix?keyword=holmes+elementary+school+new+britain+ct+calendar PDF link annotation
    • https://cdn.sqhk.co/zetobazox/8giRidM/dream_meaning_blue_bottle_flies.pdfIn PDF document text
    • https://cdn.sqhk.co/juvanejejuwo/hfjhihl/target_archery_gear.pdfIn PDF document text
    • http://robekilatufage.iblogger.org/my_cloud_login.pdfIn PDF document text
    • https://cdn.sqhk.co/bojojiweg/ghc8jdL/50978833861.pdfIn PDF document text
    • http://ninureluxoxanu.22web.org/dukatenekineludo.pdfIn PDF document text
    • https://cdn.sqhk.co/tadawatimi/dhgieU1/pinout_soundtrack_download.pdfIn PDF document text
    • http://ponoxavar.iblogger.org/logo_quiz_sheets.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sojaxub/mirror_finish_anodized_aluminum_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/jupudizadid/vekuxotaxiniwagujajaf.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/37626848004.pdfIn PDF document text
    • http://fosekor.epizy.com/16734749332.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/echo_weed_eater_starts_but_dies_when_you_give_it_gas.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/xesafesuxixida.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95cad0d8-169e-425d-8430-c2b777eeb4a6/madanema.pdfIn PDF document text
    • http://magonusu.epizy.com/88515908296.pdfIn PDF document text
    • https://s3.amazonaws.com/dudujopixejikug/animal_print_platform_shoes_womens.pdfIn PDF document text
    • https://s3.amazonaws.com/fosawef/39314707930.pdfIn PDF document text
    • http://jegafat.rf.gd/video_chucky_2_full_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de74b528-37f3-49f0-ba44-c254b094518a/zufabiwifakobajevowokuvo.pdfIn PDF document text
    • http://xiluwudikipo.epizy.com/hyderabad_weather_report_video.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/google_sheets_countifs_date.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/what_are_barriers_to_effective_communication.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08caf26b-2691-4e45-8fe8-e909d315797f/67828037856.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dbd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBD4 5472 bytes
SHA-256: 42364662c11bbff2fdd01b7dfe42b4efaf948d9a7072ed49fbce77ba7a7fadd0
font_01_sfnt_off0000ee51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE51 10636 bytes
SHA-256: 36c331912382b18a8c76a32e2f0131277256f4d6aa6592da19471057b97f4a15

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