Malicious PDF — malware analysis report

Static analysis result for SHA-256 32286c384561cfdd…

MALICIOUS

PDF

74.0 KB Created: 2021-03-07 07:02:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 06899029d840ebfdc76a9cafec6b4647 SHA-1: 908dd9309f1ee4af262e66b8d86abc53b3d4ada1 SHA-256: 32286c384561cfdd7e47fd76da0025a99f66425d26915d5af37aa0fa6a3c19e1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, suggesting a link farm or SEO manipulation tactic to direct users to potentially harmful content. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, and the presence of numerous external links points towards a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://kuzutuzo.ru/wix?keyword=cm+storm+trooper+manual PDF link annotation
    • http://fukerijinexin.mygamesonline.org/tufapimibujo.pdfIn PDF document text
    • https://cdn.sqhk.co/zesonixiv/hqjjvjh/tolakobinofafi.pdfIn PDF document text
    • https://nukogakulezov.weebly.com/uploads/1/3/1/3/131378840/kowuwixotebiwe.pdfIn PDF document text
    • http://questotzvezd.space/46931854140urdc0.pdfIn PDF document text
    • http://zaxiluxedexu.getenjoyment.net/40_hadith_on_seeking_knowledge_in_urdu.pdfIn PDF document text
    • https://cdn.sqhk.co/zexetiminav/tLW2Yij/5181031221.pdfIn PDF document text
    • https://lirefabagobaxi.weebly.com/uploads/1/3/4/0/134012393/wekimitonuz-talamitabe-bifujogok.pdfIn PDF document text
    • http://suvekitubexeso.getenjoyment.net/sex_offender_registry_nc_law.pdfIn PDF document text
    • https://mirajaxudedina.weebly.com/uploads/1/3/0/7/130775596/likerutuvazijev.pdfIn PDF document text
    • http://importants.space/patriots_and_loyalists_worksheet_answersja7nn.pdfIn PDF document text
    • http://vowujebotoza.mywebcommunity.org/dibujo_de_cara_de_nio_para_pintar.pdfIn PDF document text
    • http://power-guard.shop/56241674481eljv9.pdfIn PDF document text
    • https://cdn.sqhk.co/boxadiweteve/eifTiaK/texas_state_parks_rv_campgrounds.pdfIn PDF document text
    • http://nurigoluda.mygamesonline.org/moorish_literature_noble_drew_ali.pdfIn PDF document text
    • https://retetozatinum.weebly.com/uploads/1/3/0/7/130775023/kuwezosajaro.pdfIn PDF document text
    • http://gizaripe.iblogger.org/tetokelolal.pdfIn PDF document text
    • http://sajitalunaded.22web.org/69634440012.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/gisujubolidine/48680508300.pdfIn PDF document text
    • https://s3.amazonaws.com/pukaridimupo/250445768.pdfIn PDF document text
    • http://xivubijorudi.epizy.com/zudiwaremujizirat.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/medical_spanish_phrases_for_doctors.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/java_programs_for_practice.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/5355062253.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_off0000e546.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE546 4868 bytes
SHA-256: 3ba0341519681b2f687976378e4efebe2bcc93795a54c535eaec500ceb515097
font_01_sfnt_off0000f5b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5B4 10368 bytes
SHA-256: e9b5c110e280bf4513353ef2d06dd15d143441a316ff3d2f5a18c461c064688c

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