Malicious PDF — malware analysis report

Static analysis result for SHA-256 5910aba94c91fe08…

MALICIOUS

PDF

107.5 KB Created: 2021-05-24 17:43:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0867006d34f2685e27c4941ce2c6a1f9 SHA-1: 9138815f4ce74994f75eb8c23b24741177a66f91 SHA-256: 5910aba94c91fe0890bf6f3a64022f1ab2deb4468224a1b17b8d7771cc8ae3a3
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9991

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://bologen.ru/strik?utm_term=importance+of+non+formal+education+in+zambia PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4477651/normal_60600d4868242.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403679/normal_606455284cb74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418556/normal_60490e7a36d9b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375896/normal_60075d6732c90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408598/normal_6036d961ccee7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469633/normal_604788d6ebe8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403415/normal_603b83b57fcfb.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/bokofapig/zunapufujajosavuvojug.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/32284780227.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/maelstrom_arena_guide_vet.pdfIn PDF document text
    • https://s3.amazonaws.com/nojemi/certificate_of_conformity_form_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/boxenstopp_formel_1.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/aits_fiitjee_2_class_11_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/sakabafinosejotofifok.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/48878152664.pdfIn PDF document text
    • https://s3.amazonaws.com/tokudapele/boca_do_inferno_livro.pdfIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/59798059978.pdfIn PDF document text
    • https://s3.amazonaws.com/kaxukok/is_hyperbaric_oxygen_therapy_effective_for_traumatic_brain_injury.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/door_hinge_template_home_depot.pdfIn PDF document text
    • https://s3.amazonaws.com/vosimalume/dream_meaning_snake_bite_in_water.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/68809090569.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/piwixapufo.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/jidaka.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_off00016916.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16916 5252 bytes
SHA-256: 892669e1507ce95509e212a3bef0f5b183b213c8e7cd652c41957b3ae63c7c3e
font_01_sfnt_off00017adb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17ADB 10740 bytes
SHA-256: 203fbd582bfcb560fb8f656a7149ff171cbf6b096e3d239b7d461b3328136672

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