Malicious PDF — malware analysis report

Static analysis result for SHA-256 eac68df5186c555a…

MALICIOUS

PDF

72.1 KB Created: 2021-02-21 01:20:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: e78fd65e00cbe87727a186aefcd5da8c SHA-1: 18ee3ab0d32419c31485b2fad87d50066d490262 SHA-256: eac68df5186c555a565bc074c93dc611ea465f889a5b038ce4241f0c233fa196
104 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, specifically 'https://jacksth.ru/123?utm_term=how+do+i+change+my+name+on+nec+phone'. The document body, though heavily obfuscated, contains text related to changing a phone name, suggesting a phishing or social engineering lure. ClamAV detection and ML classification strongly indicate maliciousness, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/123?utm_term=how+do+i+change+my+name+on+nec+phone PDF link annotation
    • http://sunepoxuvigos.66ghz.com/friend_zone_2019_full_movie.pdfIn PDF document text
    • http://winclean-shop.space/how_to_make_parallette_barsrl63b.pdfIn PDF document text
    • http://rotixumuzu.22web.org/metric_conversion_sheet_answers.pdfIn PDF document text
    • http://tofabukusakuni.22web.org/78026848246.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sakigekoxigukil.epizy.com/black_clover_episode_guide_wikia.pdfIn PDF document text
    • https://s3.amazonaws.com/tolivajupeku/luvuwe.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/hepatorenal_syndrome_guidelines_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/76857637405.pdfIn PDF document text
    • https://s3.amazonaws.com/dobikasukavu/salexudikepodif.pdfIn PDF document text
    • http://pibufesoxol.epizy.com/sample_annual_physical_exam_form.pdfIn PDF document text
    • https://s3.amazonaws.com/jifesu/pedogewa.pdfIn PDF document text
    • http://rinejifivazori.epizy.com/xuwiwepige.pdfIn PDF document text
    • https://s3.amazonaws.com/jaloto/dolerafefuriminofopajulo.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/8955324052.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/wisivus.pdfIn PDF document text
    • http://wokebusaxefani.epizy.com/37393954360.pdfIn PDF document text
    • http://puligop.epizy.com/64938683824.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_off0000da6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA6C 5336 bytes
SHA-256: f8fe10502fd72570f9a4d59adbb2510c2ce1cd55668dffc96cc5153511273197
font_01_sfnt_off0000ec8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC8C 11216 bytes
SHA-256: a5be18f6d47ae28d0088d72c83986cb2fbf2fef85e560d167836c8cd20228f5b

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