Malicious PDF — malware analysis report

Static analysis result for SHA-256 8196ffdb03efe506…

MALICIOUS

PDF

81.1 KB Created: 2021-03-27 22:55:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 3628388514ecba04b44261b5339260d0 SHA-1: 7d91dd6c09ab998bc1f4d5a543c6719ab94afcca SHA-256: 8196ffdb03efe506c64aa6f4d9bab0156a21e481d86c38e7a1fa2c26158ecd26
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, which points to a suspicious domain 'resalured.ru'. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the presence of an embedded URL and the nature of the PDF suggest it's designed to redirect users to a malicious site, potentially for credential harvesting or further payload delivery.

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://resalured.ru/strik?utm_term=quran+meaning+word+by+word+in+bangla PDF link annotation
    • https://cdn.sqhk.co/tamaladafa/dCHYji6/zig_zag_stripe_boutique_reviews.pdfIn PDF document text
    • https://cdn.sqhk.co/juzexokogim/gipMghb/35291317802.pdfIn PDF document text
    • https://cdn.sqhk.co/didatife/gArKifM/pojakimebateputagala.pdfIn PDF document text
    • http://ziwixan.iblogger.org/vidavade.pdfIn PDF document text
    • https://cdn.sqhk.co/tuwodemo/e1hc16D/bunawogaru.pdfIn PDF document text
    • http://wavolat.iblogger.org/portable_travel_washing_soap_sheets.pdfIn PDF document text
    • https://cdn.sqhk.co/tuvameboroke/0idX2hi/18220283576.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1363c1cb-69d4-483c-a5e9-5d8fa384252f/the_great_depression_pics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0460b05-0990-4030-aefa-12c08dda8331/tokibagepaduvenewejapasag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c01fb77-6c54-45b7-97fb-9a5e7d26b9be/the_monkey_king_movie_series.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee62edb5-aa48-4d75-8fce-e06be2088bd3/30414567687.pdfIn PDF document text
    • http://nabesazuxipuf.epizy.com/first_marriage_certificate_form_telangana.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac410619-a655-40b7-b6dc-e909f1713362/subject_predicate_worksheet_1st_grade.pdfIn PDF document text
    • http://xumolax.rf.gd/fonodako.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d923bd2-eead-42bd-95bd-5ab8b5f53119/zugupulibuvinodikekojop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7df598d-8c22-44cd-9d76-5906fc0ccd66/how_do_you_bypass_the_lid_lock_on_a_kenmore_washer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4096932-3fbf-45d7-a2d1-375608c96c68/gmat_official_guide_2021_free_download.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_off000101f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101F6 5360 bytes
SHA-256: f943f6d0b38deba87e4d2d3b5121912901d0dbea1c6a753c65605bf7af28f995
font_01_sfnt_off00011429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11429 10320 bytes
SHA-256: 388d138adcdaba7facc8b570a5649c8de43f95cb28c4b63aae10263a91bb7882

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