Malicious PDF — malware analysis report

Static analysis result for SHA-256 5437fc8475ce7c00…

MALICIOUS

PDF

80.1 KB Created: 2021-04-28 07:46:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: be77edbe599ed7185c9ca5740b8f2ee5 SHA-1: 571652959adc15c0f5e3b8b020201920276c2fce SHA-256: 5437fc8475ce7c0002d40a08253adcb9aa95773070c33aa0cd9aebc58f4db820
96 Risk Score

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://midufefew.ru/strik?utm_term=vsphere+web+services+api+examples PDF link annotation
    • https://cdn.sqhk.co/zafowavo/jeWQmfW/fufinogoje.pdfIn PDF document text
    • http://barcaporirternet-interbank-pe.com/24501574746k0xfw.pdfIn PDF document text
    • http://sk-anker.ru/dimenank2em.pdfIn PDF document text
    • https://cdn.sqhk.co/dodufiruw/gJ1Vja5/veterans_day_deals_2019_amazon.pdfIn PDF document text
    • https://cdn.sqhk.co/sokulutesi/pDbvhh7/jeviludokanelo.pdfIn PDF document text
    • https://cdn.sqhk.co/wobuwozavenu/ggieieJ/disurememefilurasetimizex.pdfIn PDF document text
    • https://cdn.sqhk.co/piwewupovo/VmLIVhd/applock_fingerprint_premium_7._2._0_apk.pdfIn PDF document text
    • https://${DisplayName}/rest/com/vmware/cis/sessionIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/poresi/crystal_report_editor.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/50737081578.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/80997381434.pdfIn PDF document text
    • http://vakutasuv.epizy.com/ussr_anthem_wav.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/what_does_service_engine_soon_mean_on_2005_nissan_altima.pdfIn PDF document text
    • http://jodewejuwuw.epizy.com/joxetexudurojibifulum.pdfIn PDF document text
    • http://levapen.rf.gd/46738994096.pdfIn PDF document text
    • http://fegelefuxenitud.rf.gd/sirowize.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/smithing_guide_osrs_99.pdfIn PDF document text
    • https://s3.amazonaws.com/waduzirader/fevulinubazakoradiram.pdfIn PDF document text
    • http://tenurusimuxu.epizy.com/masuvubujupomovugeneba.pdfIn PDF document text
    • http://kozirexufogepi.epizy.com/5628582188.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_off0000f4f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F7 5500 bytes
SHA-256: c2cd00e892ed9bb89d844c5d91361f43fd7d0898a50e9d37f58b7d3542aac048
font_01_sfnt_off00010797.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10797 12188 bytes
SHA-256: 10c5c9ff19095e208e8df20dd35b4657713153a2b810ecc5b171898d1e26f6e2

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