Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7eb183a721994e8…

MALICIOUS

PDF

74.2 KB Created: 2021-02-26 02:31:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 0111756a6dbe76ad2ef827dee2d1d187 SHA-1: 30ab983b60d783216af2a3b1a7d67500a3c2ee60 SHA-256: a7eb183a721994e8f157c7bb6d98d4c236c0c97ad8108778c682369d867053ad
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious. It contains an embedded URI pointing to 'maypoin.ru', which is likely part of a phishing or scam campaign. The document body, though heavily obfuscated, appears to reference a search query for a valuable item, reinforcing the phishing lure. No scripts were extracted, but the PDF structure and embedded URI are strong indicators of malicious intent.

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://maypoin.ru/wb?keyword=lecoultre%20atmos%20clock%20value PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4427783/normal_603331d2730f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486368/normal_5fd8984b93073.pdfIn PDF document text
    • http://mapotilij.mygamesonline.org/the_outsider_book_sparknotes.pdfIn PDF document text
    • http://wotidoteked.mywebcommunity.org/inteligencias_multiples_que_significa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385635/normal_600a1b5acec42.pdfIn PDF document text
    • http://didazema.mypressonline.com/62471087798.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368777/normal_5fda25ca91920.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/zukogi/nofilo.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/lefajurokowu.pdfIn PDF document text
    • https://s3.amazonaws.com/wiremeresegikon/thermal_properties_of_ceramic_materials.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/noridagev.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/autopsy_reports_public_record_florida.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/cd4093be_ic_datasheet.pdfIn PDF document text
    • http://duvodix.myartsonline.com/can_you_take_the_written_driving_test_online_in_mississippi.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_off0000e67d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE67D 5012 bytes
SHA-256: 120cfed8afae14793ef92062f0c0a275f3a11a0887313c76f498fe65135bc41c
font_01_sfnt_off0000f77e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF77E 10832 bytes
SHA-256: 0418779a06fa7014fa6de4cfa9d31cc83c9a02ea57f2de0ff60266cb3dd871d5

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