Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd6e6cc3413ff3f9…

MALICIOUS

PDF

87.5 KB Created: 2021-06-08 00:16:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 966a0b6934b041a9aad280c40b49ee0d SHA-1: c6b4c683efacfb012c4111427d4810d9e89f635a SHA-256: bd6e6cc3413ff3f9c68d46ec27cec4f3e5b3c2c216d3e344785fdaede5d01e1a
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://crophysi.ru/123?utm_term=regions+of+the+abdomen+worksheet+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4452599/normal_605c0f79e3386.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462974/normal_6041a88cbef53.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371799/normal_5fd0d5a24a640.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368747/normal_6005ba0e59bf6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453891/normal_60187f55055ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419236/normal_6049cd734b9db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367633/normal_60683c6d24de1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495042/normal_5fd0e27379bcc.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/dde3c8b0-caa1-42b1-b88d-890c8c661f64/tevirojanotevutuxug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4ff9adb-58ce-43be-b4d0-e8a16fa52512/73266063030.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/006cff6b-18f6-493d-bdde-0cd0b8fc34bc/types_of_random_selection.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ec1557b-8d2c-4b44-a587-8704d16cec7b/9313910756.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e535a4f3-d1b5-44ae-9778-2b2073bf88ca/sims_3_cc_skin_sims3pack.pdfIn PDF document text
    • http://fatakalewene.pbworks.com/w/file/fetch/144501960/actividades_de_lectoescritura_para_tercer_grado_de_primaria.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d74a6575-7f6f-4d06-981f-00f9a06b544e/tizugujozajojubazowu.pdfIn PDF document text
    • http://tujelupirobe.pbworks.com/f/what_material_are_alex_and_ani_bracelets_made_of.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77fb3c8d-8d0b-4c76-8a7b-d5701056a0a9/wixasilejaxipejimilobewu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e918ed5d-c1f7-43cf-be6a-5107a61879de/web_service_rest_api_salesforce.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/225e8ea8-125c-4cd2-bf7c-4de8038361d9/19899518535.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010ac5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AC5 4060 bytes
SHA-256: c38eb966ff02dd7ba6021f2ea347d9b79c71e3792f9adeb5227a7ba17b0a5dfc
font_01_sfnt_off00011904.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11904 5592 bytes
SHA-256: 5932cc741bcccfd29372c4e89f01291a56fc85ea9e83fbbaf197469dc768d66b
font_02_sfnt_off00012bf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BF4 10716 bytes
SHA-256: ad090b8d33ea156ae2663c4a07e8b5dd1db607a39767fd9cff9f98ea4dc6ba3d

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