Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3d49c5b48ff0856…

MALICIOUS

PDF

93.9 KB Created: 2021-05-24 02:53:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 503a1d4354a1015faca920d140b52eb1 SHA-1: 2c3fdf1b0bbec171d44f8ead3570152be63bc648 SHA-256: d3d49c5b48ff0856a8f37f2c0fe0b9fe5cef73cb47e05629b64df36ad75bbab9
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that points to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. The ClamAV detection further confirms its malicious nature, flagging it as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to product information, consistent with phishing or malware delivery tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jumiwimov.ru/strik?utm_term=how+to+tell+when+vision+spinner+2+is+charged PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4471240/normal_5fcaee563d071.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403541/normal_602e36b8a3210.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/bezutu/fiddler_on_the_roof_documentary_streaming.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b06af121-3dbb-493f-b133-69becbcf37e6/who_does_general_data_protection_regulation_gdpr_applies_to.pdfIn PDF document text
    • https://s3.amazonaws.com/kumasala/wozonejorez.pdfIn PDF document text
    • https://s3.amazonaws.com/wuxupewu/kipadejenixazus.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/pantpradhan_awas_yojana_gramin_online_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91aec161-ea6b-4c1b-8491-1d0fe19770e0/rovibax.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/gapebe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb7297f3-12b2-4237-bcb7-bcdf3711321a/laketutodanub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61a64c2a-60ad-4f27-af73-070c439fafe9/how_to_replace_watch_winder.pdfIn PDF document text
    • https://s3.amazonaws.com/tunenijexe/academy_stars.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/697e1fea-9d64-4c20-a615-245a3eb378aa/how_to_start_the_heir_of_memories_quest.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc5534fa-6768-443f-b44c-3b5b9838c43d/13746133857.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/25290895300.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/32920858085.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/why_does_finch_kill_himself_in_all_the_bright_places.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_off000130c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130C9 5580 bytes
SHA-256: cd740528d58438950cdff69ba522a81b89bee7beeeb309ce6148d826a8c0c60b
font_01_sfnt_off000143ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143CE 11232 bytes
SHA-256: da2d5d5f28ced9b06bf5919ae116752ceacb36b06ed49218bdc2c7c7c7b44256

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