Malicious PDF — malware analysis report

Static analysis result for SHA-256 06b7d2eb443ca6d4…

MALICIOUS

PDF

77.5 KB Created: 2021-01-31 03:53:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 917a31c51d8badcd981dfbe32217da60 SHA-1: d6a6e1fb3e98af048a006908d772f9491cb37fbb SHA-256: 06b7d2eb443ca6d432aab7c3366bee47af8d9d9c06a9807cf6fc17899d290232
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains text referencing a "Playstation 1 emulator for android apk", suggesting a lure to trick users into downloading a payload. The embedded URL points to a suspicious domain, likely hosting the secondary malicious content.

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://jacksth.ru/aws?utm_term=playstation+1+emulator+for+android+apk PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4370077/normal_5fe171e74c790.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468843/normal_6015d86f6f289.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426687/normal_5ff96c3d2edd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386334/normal_600cb4ea6b6c7.pdfIn PDF document text
    • https://cdn.sqhk.co/bubiwalifeda/ZTZwjgh/botatejarajaposewag.pdfIn PDF document text
    • https://cdn.sqhk.co/xomorenut/jdXidje/carmel_by_the_sea_restaurants_dog_friendly.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458635/normal_5fcda81aa23d6.pdfIn PDF document text
    • https://cdn.sqhk.co/tibakekavero/cYm0jbp/ramebuzinu.pdfIn PDF document text
    • https://cdn.sqhk.co/rapowipijes/ghTjajb/97612803610.pdfIn PDF document text
    • https://cdn.sqhk.co/sawapevodef/iagcQhi/subedezerezikajure.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422392/normal_5fc5a1e536419.pdfIn PDF document text
    • https://cdn.sqhk.co/zeboxuze/jaiiEdM/53028573871.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424011/normal_5ffe53ed591d3.pdfIn PDF document text
    • https://cdn.sqhk.co/mugukawi/gfibPFb/retro_wallpaper_computer.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485299/normal_5ff2b11d7aeb0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443576/normal_5ffeba9cc01b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384028/normal_6013b8e30d68d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388158/normal_600633d2c7f77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463554/normal_6013a6867b09c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f297.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF297 5404 bytes
SHA-256: b1de542e5caa6def31634106bc993079434e824345b2bf5dd94c2b063c2417fe
font_01_sfnt_off000104f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104F9 10492 bytes
SHA-256: b6fa489416be59e9903bf801911644f668ae3c4650d7999b8ad6ff7b588cf66a

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