Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a0dd5f5c97624c2…

MALICIOUS

PDF

78.3 KB Created: 2021-06-02 19:59:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: e7814f01c0fe7cb3e71ce1817082e5db SHA-1: 51f817ffaa2aaa80f63e243ee1b483f43dca72ac SHA-256: 4a0dd5f5c97624c2729499005444275612e11215c25282f23e4158186b850953
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 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pixomot.ru/pbw?utm_term=clinical+microbiology+made+ridiculously+simple+6th+edition+pdf+free+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4404969/normal_5ff9a858007bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449424/normal_600fe730eb90b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370055/normal_60111f3f2cdd0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391315/normal_600d28c417637.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394061/normal_5fd3dc294e848.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475727/normal_60198f4486905.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/d98d95b3-ef15-4056-b867-d43ad59a2dee/kuta_software_infinite_geometry_arcs_and_central_angles_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a21186f-56a8-4983-89bb-e67151a63ecf/nexixosugomibajup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3be6ece-114f-4fac-9e86-73cc6d17b57e/pafowujokikunasuzugapexod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/023585e0-2ce2-4031-83ec-0d83289ef302/memajugobamesupore.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19fae015-e276-4f7b-b80c-465517410889/raramizunexuvomifulene.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/516b1f09-f276-4e00-9190-16507205eca1/mipidegejiragufi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ec3feff-1d4c-4391-aed8-37416ccaf912/are_infrared_heaters_economical_to_run.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1717132b-45af-4744-a124-c924a5325af4/96781102244.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09480883-a72d-47a6-8b22-5d0c5a12223e/257268753.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e67c4419-7d64-4bb6-8feb-dc69370e9771/how_to_check_car_fuel_efficiency.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b0b7dbd-58fb-4d7a-8df2-ca838329bc02/general_journal_entries_practice_questions_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e9e3868-d2fd-49cd-aeea-9cd99959f4ad/337260955.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

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e3e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3E4 5964 bytes
SHA-256: 8234ec43f02b449bb645af1993e69ac0ab89a5570e56e2a3d89f159bda82f03b
font_01_sfnt_off0000f807.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF807 10784 bytes
SHA-256: bd11073b0aaaf78c482e1746283e40da7594d981ebf7307f60673cb2daefddcc
font_02_sfnt_off00011c91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C91 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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