Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf7d2a3b8b053bc4…

MALICIOUS

PDF

78.4 KB Created: 2021-05-26 04:55:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 810303eb9d715385087c8276992e1f66 SHA-1: 73fb3d77242a9bbc2e180a50e28c9077f0f388e8 SHA-256: cf7d2a3b8b053bc41dc286dbef1da1ddb20794192a1a33777e46f4cc8f34358c
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://mezovuduw.ru/strik?utm_term=how+to+start+a+school+farewell+speech PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383322/normal_6012fc29ce1fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369323/normal_6037a4f4e95d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454042/normal_603695c3a1924.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467612/normal_60276059be7a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406168/normal_603a1dde9e32c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456165/normal_60508f9485c51.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486354/normal_5fe13e3831161.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408482/normal_6053263e344fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453342/normal_6069391c6224d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407789/normal_602fdc9f29ac2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403413/normal_604e53ec855bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487665/normal_60117c90c395a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459165/normal_6067c0564539d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390684/normal_60002a681f2ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464302/normal_603f16ca2a02e.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/8b350b99-d9fc-4500-bdc8-3346d70b1b85/huuuge_casino_cheat_codes_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/kezoka.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/bookworm_adventures_free_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/616b4091-4084-4124-aa01-af7dd06f04c5/monovunozo.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/uniformed_services_university_bethesda_maryland.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_off0000f4d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D4 5156 bytes
SHA-256: f8c8591af1dbb6f1cc7954d6823904e1423f936e68d007e63e20aee4715c5a8e
font_01_sfnt_off0001066c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1066C 10960 bytes
SHA-256: 5cf8f6dad0a4c208e4680d469e16f9d258dd14c056de25e08acc94ecdb81f111

Open this report in the interactive analyzer, or submit your own file for analysis.