Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a7c02780296c9b8…

MALICIOUS

PDF

65.7 KB Created: 2020-12-06 23:42:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: bd7df949c75215d04055f10972c20ef3 SHA-1: bbd9c1076c876514caf115bd65345935b303f0ce SHA-256: 8a7c02780296c9b873ce5ec9ab3c6b79f6fe9d47f1bb164e3c21fc320fe64058
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-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://traffset.ru/123?utm_term=kenmore+side+by+side+refrigerator+model+106+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365591/normal_5f932bea244b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499317/normal_5fb52ae599747.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/e60b2492-3f06-4850-bf63-49e07ce2fa9f/88395551459.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49087ae6-6bc0-45ee-a954-799996a0c5f8/lecoultre_atmos_clock_operating_inst.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fc8d355-9ea8-4947-9b8d-56f0fb0a995d/47585711659.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/braille_sense_polaris_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/general_anesthesia_drugs_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f040ea8d-e126-4347-84de-fc42953fa07d/devudo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a80e7955-a957-4825-8713-7a93c2a7f24b/27634385723.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f906aad-df80-4e5f-ba2c-f8af31fd6bca/nixorejekoruv.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/zuvuvikugomobolo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68617385-0f17-488a-96b3-49e129b634a8/ganesha_garden_fabric.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/pajulitalazetov.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_off0000b409.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB409 5668 bytes
SHA-256: 6f0c54d2a9f72b7b1f47668bd519bb1a8ec645711b97d7b16facc728bfde4c4f
font_01_sfnt_off0000c744.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC744 10652 bytes
SHA-256: 2cadae4e5dbe667dbb61d4ebad0f8596cb07adef60fb96102c43f45edde0a3fb
font_02_sfnt_off0000ebc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC6 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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