Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2df8b174279c7aa…

MALICIOUS

PDF

89.5 KB Created: 2021-03-08 00:48:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 3e4708a8bbcb0add96253cd881ae6bb8 SHA-1: 7524f2584c5193ea1b54019c9c9bff59f29e871c SHA-256: d2df8b174279c7aa72043eb4674174c2a71cf7fbbd9e17338cd5bbf88d6176b0
156 Risk Score

Malware Insights

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

This PDF document contains a mass of external links, identified as a link farm, with one prominent URL leading to a malicious domain. The document body, though heavily obfuscated, appears to be a lure related to a search query, directing users to a site that likely hosts a phishing or malware payload. The ClamAV detection and ML classifier strongly indicate malicious intent.

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
  • 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://jacksth.ru/strik?utm_term=what+is+full+form+of+pcm PDF link annotation
    • https://naximoselotol.weebly.com/uploads/1/3/4/5/134581957/9079062.pdfIn PDF document text
    • https://wivewuti.weebly.com/uploads/1/3/4/6/134698804/fuwapuraxoni.pdfIn PDF document text
    • https://jamakebowixon.weebly.com/uploads/1/3/4/4/134477175/c698f.pdfIn PDF document text
    • https://karomigotel.weebly.com/uploads/1/3/5/9/135962203/divatij.pdfIn PDF document text
    • https://cdn.sqhk.co/popaxutu/EXsgfoz/gikopemeropikapagegesus.pdfIn PDF document text
    • http://nokuxitajorox.22web.org/impression_photo_grand_format_bureau_en_gros.pdfIn PDF document text
    • http://kezivinu.iblogger.org/tatulafinulonawewapuno.pdfIn PDF document text
    • http://ponupofo.iblogger.org/how_to_draw_an_anatomical_heart_step_by_step.pdfIn PDF document text
    • https://fevuxutub.weebly.com/uploads/1/3/4/1/134131759/26a82dc20de593b.pdfIn PDF document text
    • https://cdn.sqhk.co/waximanodif/iagdii3/wokegapuvagew.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/sowewazulejewi/bolakazu.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/aol_application_for_android.pdfIn PDF document text
    • http://sasitegeke.epizy.com/basic_english_grammar_notes.pdfIn PDF document text
    • https://s3.amazonaws.com/zatazewoz/bowers_and_wilkins_p5_wireless_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kiremefegonar/bissell_pet_carpet_cleaner_replacement_parts.pdfIn PDF document text
    • http://dunoxoxuri.epizy.com/12596153021.pdfIn PDF document text
    • https://s3.amazonaws.com/dobikasukavu/whirlpool_cabrio_washer_and_dryer_cost.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/37373176067.pdfIn PDF document text
    • http://gewapapis.epizy.com/moretosig.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/wonusijuxowarozolez.pdfIn PDF document text
    • http://kasaxamaburabuz.epizy.com/missguided_blazer_dress_asos.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_off000120ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120EA 5268 bytes
SHA-256: 5d0090ed133dece41666d23454addf32a81beea0f079edd9418e3bd3a903e3f2
font_01_sfnt_off000132b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132B6 11276 bytes
SHA-256: f626f672799c6522c830f094d81f96a5a3eee4101d7f59d59e445676a1a49249

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