Malicious PDF — malware analysis report

Static analysis result for SHA-256 06512a5a27db6ad9…

MALICIOUS

PDF

60.8 KB Created: 2020-11-19 04:11:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 4eb477299cc3e130e8012211a5c05a5c SHA-1: 9d9d7b10961e9af492a9c56913710e23bce34a3a SHA-256: 06512a5a27db6ad9bfc7653c80633c47267d794074f79ffd93dd4c08922d6946
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 0.9996

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://trafficel.ru/aws?utm_term=dictionary+scavenger+hunt+worksheet+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4443329/normal_5fa591b3073bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367925/normal_5fa1428664dda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456140/normal_5fadc8252d033.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417040/normal_5fa37851c482f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380405/normal_5fa3f29f225a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_5f873c156d3ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476927/normal_5fa5c61a28322.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/89a61a6a-d9b1-442f-816d-ce955912a466/74764778303.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/092ca575-c88b-4883-bfad-c880b64a6f4b/gamekit_survey_scam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ac42255-2d96-4948-9c18-9a064779db3e/nerolugupo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0042b968-7347-4026-96c4-49d8fe256cde/beginning_geometry_proofs_worksheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f648fd36-6688-4b5c-9d25-e9301f137e4f/63787581985.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86878aa1-59c2-4d2a-a9e2-64ec320159ec/narebabibeta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/521aeb56-f5bc-4a9a-87ab-5f4fde11753e/fogedokadej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fd1cd9c-3b69-4242-b6bb-6aa65ac3c2b0/74856789164.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b10a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB10A 5700 bytes
SHA-256: 37eed9bb52aa6eb97fd1cd7b23f72ae7ba01e73bbb8628b2f6e11c9e8d722de1
font_01_sfnt_off0000c496.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC496 9940 bytes
SHA-256: c18f830eaf868a1d2a6f71d6585bb2c6a5a238684d6cedcc9c0e77041ac77d31

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