Malicious PDF — malware analysis report

Static analysis result for SHA-256 c534a93c4e81a578…

MALICIOUS

PDF

75.2 KB Created: 2021-02-28 05:52:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: ef16ab790d9ab4c6ccb988244fff7e1d SHA-1: d3940ad73a89228fcd2abdf4e6d5353c9f8b7375 SHA-256: c534a93c4e81a5788f9429ae5ffaeb7e9114e52c11242c4ef486ce9d2b9800a7
104 Risk Score

Malware Insights

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

The sample is a PDF document flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The presence of an external URI pointing to 'botokaw.ru' suggests a phishing or malware distribution attempt. The heuristic 'SE_URGENCY_LURE' indicates the document likely contains text designed to create a false sense of urgency, a common tactic in phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://botokaw.ru/aws?utm_term=biblia+catolica+salmo+91+completo PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4385436/normal_5fe45a0cd1308.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498842/normal_602afa30e1e0e.pdfIn PDF document text
    • http://lishop.site/53605764916c4ii6.pdfIn PDF document text
    • https://cdn.sqhk.co/tixunudixa/e1Qqgdu/police_car_driving_motorbike_riding_hack_mod_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485010/normal_5fde6326219a6.pdfIn PDF document text
    • https://cdn.sqhk.co/ruzemesafe/eqZjbRf/menogexapalig.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474723/normal_5fece9e050fe7.pdfIn PDF document text
    • http://domastmsk.space/doxeripabuvizowazoledeen8f9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478383/normal_5fffdb3986758.pdfIn PDF document text
    • https://cdn.sqhk.co/woravejafeto/iEhieb1/daily_equipment_inspection_checklist_template_word.pdfIn PDF document text
    • http://musofiron.ru/bagpipe_sheet_music_thunderstruck7lwnm.pdfIn PDF document text
    • http://goodxday.xyz/wooden_platform_bed_basewhf8a.pdfIn PDF document text
    • http://dkblogin-de.best/17618819318h4427.pdfIn PDF document text
    • https://cdn.sqhk.co/sebutarukaw/jaijejb/legacy_2_the_ancient_curse_apk_obb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418796/normal_6038c5801c08f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kewugozosefo.epizy.com/beginners_guide_to_fishing_equipment.pdfIn PDF document text
    • https://s3.amazonaws.com/kegovev/sugujupemisusagisukituwu.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/ropof.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/karaoke_night_flyer_template.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/rolaluwuvu.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_off0000eac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC2 5380 bytes
SHA-256: 75ec340d689e947745465e7f2fd813077c7962d666a7da92f0730587ac89d997
font_01_sfnt_off0000fcfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCFE 10192 bytes
SHA-256: 8c26619a7de8bd0c7a75403c6f76ab08d226099e50e0ba60dc761c964f3c0c32

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