Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e7c9c904436fe4e…

MALICIOUS

PDF

77.5 KB Created: 2021-05-27 21:54:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 8285d5f5524b5e04cfec66fcb51a4c35 SHA-1: d9823028c416258b1a6bec96748de230f36c8d09 SHA-256: 4e7c9c904436fe4ed089284f9555f9e8e78a2adcd531f02331e34161bbe7f21a
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://crophysi.ru/123?utm_term=birchwood+community+high+school+ofsted+report PDF link annotation
    • https://roboxojepuz.weebly.com/uploads/1/3/4/2/134235986/mafaralobog-davanowur-mamolozorumox-tevabojuxagure.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366623/normal_5fd172651650d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445570/normal_6021ae2f1c649.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419423/normal_606ac5181ac7a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4530712/normal_5fdb3b8c6d3f9.pdfIn PDF document text
    • https://bixavovene.weebly.com/uploads/1/3/0/7/130775743/212666.pdfIn PDF document text
    • https://fixabewol.weebly.com/uploads/1/3/4/7/134711766/8383950.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418762/normal_602b22b2b06ab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405641/normal_5fcf492d8cf01.pdfIn PDF document text
    • https://xekixaxaleza.weebly.com/uploads/1/3/2/6/132695200/bikisurimogud_giwowasiboxix_sojoselowawun.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/8a4dbecc-5894-4cc1-ad1a-02871b5971b1/58990971155.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89edee06-b83c-41c5-8956-9e290a8f4a5e/endosymbiosis_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77e0b63c-77fb-431a-9aa9-84ca1033bd1d/20747318228.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abdfc2a4-9375-4fd0-a739-14ccca8a4a23/21828963997.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d654fb7-7dac-4631-a6fe-62e37ef5efbc/craftsman_yts3000_parts_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3f51c8c-0725-4fe3-a921-0f4ff84e4575/vusadeliwozofafikone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bf82aa3-5fef-48f2-ba15-d4723c49191d/sense_and_sensibility_movie_1995_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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED8F 5604 bytes
SHA-256: 922cd1c4d98807aaf8c06f3f4ba6036077af7fb84490365c3189a10f0d259d2a
font_01_sfnt_off00010095.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10095 11880 bytes
SHA-256: 9649d659cedf44e376460b21810f8d9e21113ca6ec690ac28a7118fd3e2d0e31

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