Malicious PDF — malware analysis report

Static analysis result for SHA-256 36e99a047a9e5d28…

MALICIOUS

PDF

79.4 KB Created: 2021-05-18 07:44:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7b1c4c34fd76f08ce003bd2967187790 SHA-1: 5e294afd80fe35f8b004f82f19bb4865f757c4a2 SHA-256: 36e99a047a9e5d28e114289ca53a34e20075f9ca13618372a3138e5f8651090a
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 0.9995

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://crophysi.ru/strik?utm_term=convert+68+kilos+to+stones+and+lb PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380531/normal_605d671e90f92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444370/normal_604351ea621a1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389601/normal_6007decf8124b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377662/normal_6000581a6e942.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403808/normal_6067337621185.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412897/normal_605fbe7d7bf45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484355/normal_6052ccdeb65b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373281/normal_602f24d9e77c3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447641/normal_605f6fd05015f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448094/normal_6050fb73ecda2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485446/normal_606e10d3ee493.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380090/normal_5fd99ea882681.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499999/normal_605f96ff736ab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420761/normal_5ff62e9069986.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/lunojol/wokigezowivosi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7975340e-04fc-4ee8-94f5-a5d0c7e64dae/82012231198.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/adtran_netvanta_1638p_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/boselifomowapuzo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/339f23f3-f69b-40f6-8486-6ca61604b61b/how_to_rig_a_fishing_pole_for_saltwater_pier_fishing.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/beginner_pilates_reformer_classes_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/5186122688.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bad2320-ba9f-4260-b011-605f973bc37f/cursos_marketing_digital_google_drive.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dff8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFF8 5336 bytes
SHA-256: 5f92b3b65f4b7d6e1531b2fde025d158a8dacca89a5137231f9d010be24ee59c
font_01_sfnt_off0000f228.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF228 11764 bytes
SHA-256: cbccb87e5d2afe061a934ae170f05fe7be0f02e869708e270b6a0a2cf82cac00
font_02_sfnt_off00011aaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AAA 16184 bytes
SHA-256: eb166720a3502e66cf7f1956fc9edcd3f601ca988a83ff2b0a2b28b694fd0571

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