Malicious PDF — malware analysis report

Static analysis result for SHA-256 48c1a24798d2683c…

MALICIOUS

PDF

81.6 KB Created: 2021-04-01 17:48:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cc9a9560d8c1a7a93ee47e3192b3d461 SHA-1: 74c419537e07ec9db7c00b946e7b34ffd65d8f60 SHA-256: 48c1a24798d2683c48079e37fb5cf1c00d728750ba9789f03339601884086721
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a lure related to evacuation drills for children, which is a common social engineering tactic. It embeds a URL that points to a suspicious domain, likely intended to host a malicious payload or phishing page. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

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://resalured.ru/aws?utm_term=como+realizar+un+simulacro+de+evacuacion+con+ni%25C3%25B1os
    • https://cdn.sqhk.co/lesasafo/vtchcZ4/lagitome.pdf
    • https://cdn.sqhk.co/tuwebobit/2cCZifU/16793831975.pdf
    • https://cdn-cms.f-static.net/uploads/4500878/normal_6036192c9503e.pdf
    • https://cdn.sqhk.co/lakinidiku/diij1Xv/paper_gingerbread_house_template_printable.pdf
    • https://cdn-cms.f-static.net/uploads/4426075/normal_60625a91b4e00.pdf
    • https://cdn.sqhk.co/bulegumu/1lWha1X/48349456026.pdf
    • https://romugazasemagop.weebly.com/uploads/1/3/4/8/134897733/wagonulosadowed.pdf
    • https://cdn-cms.f-static.net/uploads/4390366/normal_5fe9d7e100e60.pdf
    • https://pafirolexorawu.weebly.com/uploads/1/3/4/6/134612045/d7c536287.pdf
    • https://cdn-cms.f-static.net/uploads/4382972/normal_600ae95e14d2d.pdf
    • https://cdn-cms.f-static.net/uploads/4415769/normal_601ff1c76d80a.pdf
    • https://static.s123-cdn-static.com/uploads/4384459/normal_5febc62b9a1db.pdf
    • https://static.s123-cdn-static.com/uploads/4420917/normal_5fffbd693d976.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xopugup/what_are_the_4_types_of_imagery.pdf
    • https://s3.amazonaws.com/bopuxosavubare/chapter_1_thesis_format_ppt.pdf
    • https://s3.amazonaws.com/mafavuzenoliki/quantitative_research_design_example_outline.pdf
    • https://s3.amazonaws.com/teximikamukubo/59806170576.pdf
    • https://s3.amazonaws.com/vaxebisapesi/commodore_64_roms_d64.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc4e.bin
90693209463190b119265552e36f2e6e97dde87fff77f5c4ad759ca43e0c6a5b
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC4E 5312 bytes
font_01_sfnt_off00010e08.bin
6bcfd2bc25ecbfc2364c174307cd5abaafcc046b7e9a146c08f0a9eda83ca1e6
pdf-font-stream PDF embedded font (sfnt) at offset 0x10E08 12776 bytes