Malicious PDF — malware analysis report

Static analysis result for SHA-256 39b6fc7bb88577b8…

MALICIOUS

PDF

74.9 KB Created: 2021-03-30 02:23:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 77e1429dda95da66155cb9d3d5290627 SHA-1: 5645e92927fbca90dee9ca416db99881a22535d5 SHA-256: 39b6fc7bb88577b877af2309cb3a39777f794e565dcc6bccecbbecda5e6824e4
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://jottigo.ru/award?keyword=iridotomia+yag+laser+pdf PDF link annotation
    • http://tilikef.mygamesonline.org/athetosis_adalah.pdfIn PDF document text
    • https://jikowizovogowo.weebly.com/uploads/1/3/2/6/132682153/tajubibemifozef.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449614/normal_60027e3e73ca0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489263/normal_6055235051ac9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460963/normal_600bb45a39f77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389387/normal_6029820c2ca0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406482/normal_6060a1d09e241.pdfIn PDF document text
    • https://terovudomam.weebly.com/uploads/1/3/1/4/131406893/pudapaxulugebano.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dazawojob/the_boy_who_harnessed_the_wind_movie_download_tamilrockers.ws.pdfIn PDF document text
    • https://9e084d23-5bbf-42ad-98e9-fa9200f8584e.filesusr.com/ugd/4f663b_e68839517b6d4e6db2effcf9970322f3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jivuxo/digulinigatunelokukamuzeb.pdfIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/vixarerosomuram.pdfIn PDF document text
    • http://piwolimosopobu.myartsonline.com/familia_enterobacterias.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b70cfab-fe94-42c5-b80b-306ecfdc5fb1/walmart_cash_register_codes.pdfIn PDF document text
    • https://972af30b-04c2-4618-b911-83ba0b7fef9e.filesusr.com/ugd/84a5c6_445cf55d666e41f0838937018350f898.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7055696-d17c-469f-a8a3-77de75473c16/weider_ultimate_body_works_incline_bench_video.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/bezusuxajigabizimaralitiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60f346e0-73a7-4e12-85e7-fc8db4e1ff1a/mozart_c_minor_mass.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_off0000e848.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE848 5400 bytes
SHA-256: 23a9052576e2a99171f5b4f94525cdc67220543185fb55d00bc79fa0c80320b6
font_01_sfnt_off0000fa98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA98 10444 bytes
SHA-256: 878ccd806d9ce7f8cdf7bd8e363dae31f45652af918f1237b278302f79a43500

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