Malicious PDF — malware analysis report

Static analysis result for SHA-256 203cd1fd0f27855a…

MALICIOUS

PDF

71.1 KB Created: 2021-05-01 21:08:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d609a54645e60f7306c9346590566a5b SHA-1: 9424a7b41243033f8e07ae75614ba4465954bd01 SHA-256: 203cd1fd0f27855a45e04b4c8a255def13a335e045ba20a96d686af8cfe63bf4
96 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. 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 0.9993

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://jottigo.ru/strik?utm_term=how+do+i+program+my+remote+to+my+dvd+player PDF link annotation
    • https://cdn.sqhk.co/xenekifa/jdeicZd/muwavelekex.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366040/normal_6044d4c5c8daf.pdfIn PDF document text
    • https://cdn.sqhk.co/saboxiwago/hghbhf6/41209915160.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493881/normal_6003dbcbe36ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445864/normal_6009dbdb80530.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368748/normal_60459c8cbaba4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458628/normal_6042d46e9a0c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374957/normal_603076c2e359f.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/wixatax/30654154761.pdfIn PDF document text
    • https://s3.amazonaws.com/tugabijenovili/label_templates_for_wine_bottles.pdfIn PDF document text
    • https://s3.amazonaws.com/futamo/32328187410.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/gokekivaditevofonidizij.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/what_is_a_transcendentalist_belief.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/syma_x5c_app_android.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/77274718439.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/learn_how_to_drive_a_forklift_online.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxegu/pewapiwor.pdfIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/credit_report_freeze_removal.pdfIn PDF document text
    • https://s3.amazonaws.com/bidemewufa/gusher_screen_broadcaster_pro_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/tafogusegabomu/supunowapilatuxobajoxo.pdfIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/transfer_of_bacteria_aseptic_technique_lab_report.pdfIn PDF document text
    • https://s3.amazonaws.com/somisilegex/96987427253.pdfIn PDF document text
    • https://s3.amazonaws.com/wewiro/datepicker_date_format_dd-_mmm-_yyyy.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_off0000d9c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C8 5316 bytes
SHA-256: e7b3d02b4cdc884e172680500ebb25655ee836454654d9906904924c4d45ff85
font_01_sfnt_off0000ebe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBE2 10252 bytes
SHA-256: 8803fba47b78dd47363294ac9f3516d7856f31968040994ec4b05db109e86589

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