Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba2dccb61ab6baa8…

MALICIOUS

PDF

129.7 KB Created: 2021-02-15 18:41:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 93a6e9aa3fe3ab507e4e8c4a9dc3f121 SHA-1: 6704a09c34c76b60947c9323b4fae5a6f2fd10cb SHA-256: ba2dccb61ab6baa8b410dfd2f695323d1297439a99a5b7cd18fdc96b1480c8ff
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a phishing or trojan payload. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body appears to be garbled, but the presence of URLs and the overall detection suggest a phishing attempt to trick users into visiting a compromised site.

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/wix?keyword=northeast+corridor+express+train+stops PDF link annotation
    • http://netzamka.ru/merge_2048_shoot_n_mergey35wa.pdfIn PDF document text
    • http://hookup673.site/tomizukusobijijizolisonr3hxz.pdfIn PDF document text
    • http://titalat.iblogger.org/risadubizokejik.pdfIn PDF document text
    • http://manybigs.space/63236333742d6sru.pdfIn PDF document text
    • http://lg-copyright.com/performance_coaching_log_templategmt0k.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464082/normal_60219432f09bc.pdfIn PDF document text
    • http://goodnatural.space/zixusatadosejaxalibevdi9qn.pdfIn PDF document text
    • http://iciko.xyz/697248454001rfxb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488809/normal_601faf089c547.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414161/normal_5feb6f8940e38.pdfIn PDF document text
    • http://triple-doska1.club/5113748130654xcv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419191/normal_6001911986982.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477164/normal_5ffc73d49d4c6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393193/normal_5ff086ccabe1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369903/normal_6017c31850eb8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kodigejo.rf.gd/arte_classica_grecia.pdfIn PDF document text
    • http://najaxobefirag.epizy.com/wevumimadivegoduzojopoke.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019fae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19FAE 5168 bytes
SHA-256: ad1cc72c6157c18371fd6f7a698c0453f898e1b529d02d5e15f5e56fd9a7e53a
font_01_sfnt_off0001b13d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B13D 15980 bytes
SHA-256: 844663a827f0f6053f95cb52d6ecb8aabcfb65731304cd20f1b397b781130438
font_02_sfnt_off0001e327.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E327 16316 bytes
SHA-256: f4e0a33b594647fbb296a322b9250dce1064f7d1d5fdf1b61004eb46530ca58b

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