Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f4b353049e7cf87…

MALICIOUS

PDF

81.4 KB Created: 2021-05-22 00:10:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 89fc741e85942412bf177ca5af713ed7 SHA-1: 90a5e1c78e38e2e6fd8d226c261f334609c68735 SHA-256: 5f4b353049e7cf8753a39dda2002c3afe8e6d4caa9579740f8842d7f2d19dab2
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://gimoguvi.ru/strik?utm_term=mishkat+shareef+in+english+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485162/normal_603c000970920.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485443/normal_6024fa7f27fb1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480743/normal_5fefd018c8f2d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405899/normal_6026575bac53a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425238/normal_5fe4552e01d75.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/67e936c8-1663-42f1-bb0c-f9ffdd0fe82d/91004647484.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4be36f68-5aa1-4792-b9e0-b3ed85138ec1/how_to_do_cashier_math.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9122042-1566-49a3-b915-9b82a1ea4fb0/88837731980.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0af7867a-5d68-4d83-bf80-12dd88828505/26508850932.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b05ac3d3-5e87-4969-b8d0-d45d07f57201/t-mobile_personal_cellspot_signal_booster_setup.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/contact_form_7_mailchimp.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfee6976-4cdd-4bbb-84a8-6fed14c02343/what_are_the_major_principles_of_training.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ef26e71-2ac8-4b8d-9d2b-c397524ab3d3/25626485560.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1708e76c-d7eb-4d1e-a6b8-35add71bbfce/58566009340.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/588ea18a-f50e-4ade-8f87-5b5d1f9c9f87/9064829613.pdfIn PDF document text
    • https://s3.amazonaws.com/lopeteb/c225_task_1.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/emerald_tablets.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/94742504092.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/wazani.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fccdb47-89a0-4157-8e02-61e5e65f2922/41694900281.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24e8da9d-510d-4791-ae68-087ff4e4c5de/poruwarovuzemezirupo.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d874.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD874 5048 bytes
SHA-256: 91119157acb2d9a77afe50e08c9115c60907c3fe10411dd2692e23893a488be3
font_01_sfnt_off0000e991.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE991 10648 bytes
SHA-256: 3559eb1c54f6f2a6bed2336d25f11551aec8256157a03b9268a16a2ace900390
font_02_sfnt_off00010e0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E0E 18084 bytes
SHA-256: f44cb2ba28045f7f58dd27d93bc8a53d0f2f40a41a4dc077502e0a8e91f3757c
font_03_sfnt_off00012949.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12949 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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