Malicious PDF — malware analysis report

Static analysis result for SHA-256 e58ce3368ed15d90…

MALICIOUS

PDF

85.2 KB Created: 2021-03-21 05:05:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0a88b0fd11e79de428d5355559e6e94f SHA-1: 0f2bc12b947838cb5a19ba49bc23dddea20893a6 SHA-256: e58ce3368ed15d90d3980c70d56eef412cfec11e017956c9b315d6c8fb6f687a
116 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a callback-phone (TOAD) lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/strik?utm_term=black+and+decker+drill+battery+charger+20v PDF link annotation
    • http://kevikakagax.iblogger.org/tizeridexujopemefemel.pdfIn PDF document text
    • http://trastenmyqort.online/excel_food_costing_template_freedmsiy.pdfIn PDF document text
    • http://idclick.cash/mariadb_mysql_manualw5wf0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zedilegol/38172809558.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/nedejinimajovonimi.pdfIn PDF document text
    • https://s3.amazonaws.com/wizomoravazub/aarakshan_2011_full_movie_free.pdfIn PDF document text
    • http://lorajazibosiner.epizy.com/advanced_auditing_notes.pdfIn PDF document text
    • http://mogopubu.epizy.com/javascript_interview_questions_and_answers_w3schools.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/10015204157.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea982275-df89-423b-8d30-051501b04a6d/vifirutoruwepulo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3113234f-3870-44d6-a488-2602b079d21d/how_to_hard_boil_eggs_in_a_stovetop_pressure_cooker.pdfIn PDF document text
    • https://s3.amazonaws.com/rumezo/rapoluxusume.pdfIn PDF document text
    • https://s3.amazonaws.com/tifuwuw/zofufumipizefenaravisupi.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/beijing_platform_for_action_1995.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/afl_live_2_free_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/yardi_voyager_work_order_reports.pdfIn PDF document text
    • http://wonumamirevaz.rf.gd/bwv_846_guitar.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/garmin_drive_50lm_battery.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/quadratic_equation_examples_answers.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010055.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10055 5392 bytes
SHA-256: 1157bcf6319f3fc2d20d1e84dd588f76bde0d508f069febaf4656a92f722404e
font_01_sfnt_off000112a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112A7 11244 bytes
SHA-256: 0249974fbde3043ff1897a35ae5a972e0977afa26d40234d0581222f82b03af7
font_02_sfnt_off000138f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138F1 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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