Malicious PDF — malware analysis report

Static analysis result for SHA-256 544dd5984beb2736…

MALICIOUS

PDF

92.7 KB Created: 2021-05-29 04:11:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 94fc284c30df22c6999e51d78730d8ee SHA-1: de99355ca910f127ca6facfcfa529bdda03480a7 SHA-256: 544dd5984beb2736ef7d510769db8c41e1ca8a5cb902f2be1310e024521e40cc
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 0.9997

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://druttle.ru/strik?utm_term=what+is+meant+by+tajweed PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4453754/normal_5fde5e117b449.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503197/normal_6006be932ddfc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487424/normal_6007cb5bbf246.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/3fce3c5a-3afd-454c-baab-dccc33abe067/geometry_dash_mod_menu_2.1_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82d585c5-6785-49bb-85f7-76b14b487913/25177916833.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fec4358e-20dd-441a-b6d5-891a6cd16bbc/45657847586.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/153eb8c8-0fc3-4046-979b-534e47ec6b47/how_to_invert_the_camera_on_windows_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f29e7080-ffa7-4ffb-975e-fb90fdff5c06/rifimusegigofafiwixer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2675fd1-88f7-42a8-98d2-73be35658c61/robuworujanebodalur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d90dbe74-aadd-43df-a8f2-f3de86685505/the_developing_person_through_the_lifespan_9th_edition_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/290f2c66-09e7-4dc7-8614-f0d55502aa09/wekugunomavodorodatik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5db74cd1-998d-4e17-b6e4-2d9acf7d5794/98534378464.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9909953-ba2c-45d9-a684-3446b61a7b65/pokeretamo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b9956d3-251d-4b24-8fd0-c0ba5b0bb993/hp_officejet_4500_desktop_all-in-one_printer_-_g510a.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97eaed04-af96-43cb-8b92-b82071071535/windows_batch_file_programming.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e9a9dfd-29d7-433d-a721-2a719728a890/relative_frequency_distribution_calculator_statistics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af9011b5-4916-4148-8887-e23cd3dd989b/fiche_de_paie_vierge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa5afee6-5f8c-4bf6-96cf-fe38395664c4/samsung_gt-p5113ts_charger_walmart.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0001302f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1302F 28804 bytes
SHA-256: 030ef211df903aa9aedf23f72c0788804d6211e53358c17220c4725e01513816
font_00_sfnt_off0000f846.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF846 5360 bytes
SHA-256: 8f1b6d3d61371c87e2e0990d6115ed57fbb4d14518bd055d73e49f058bd22636
font_01_sfnt_off00010a78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A78 11036 bytes
SHA-256: 214390481c66cc91fc769ac1dfd74cf32ef6650f14b9f07e7bf854602a16f860

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