Malicious PDF — malware analysis report

Static analysis result for SHA-256 bef2e80e3ffa618f…

MALICIOUS

PDF

230.3 KB Created: 2021-05-07 21:04:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 63d991958566087aaaab12ef0680cbc3 SHA-1: 2d4bf658c64caba3c7ef7576dbfc7a4c643df6d6 SHA-256: bef2e80e3ffa618f5a1b35912a132f672b75e455ec947f29d80a32dbb651dc0e
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 0.9964

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://nipisod.ru/strik?utm_term=buderus+logamax+plus+gb142-45+g20 PDF link annotation
    • https://zafapuguma.weebly.com/uploads/1/3/2/7/132712217/dufasimalokitugafale.pdfIn PDF document text
    • http://mailedflkf.site/dungeons_and_dragons_3.5qnaab.pdfIn PDF document text
    • http://zagodutaf.getenjoyment.net/deficiencia_de_vitaminas_y_minerales_en_mexico.pdfIn PDF document text
    • https://resawipodejevi.weebly.com/uploads/1/3/0/8/130814711/moweforiwomo-leduvaxemuwofo-fitewajaw-sivikodarisaga.pdfIn PDF document text
    • http://lulopoboxefon.scienceontheweb.net/tulewuzodejewo.pdfIn PDF document text
    • http://gakukuketisalum.scienceontheweb.net/cycleops_fluid_2_trainer_zwift.pdfIn PDF document text
    • http://oblakova.ru/nujukedapbnw9m.pdfIn PDF document text
    • https://dazenesulamese.weebly.com/uploads/1/3/1/1/131164173/funuzubefovi-teses-dubexomikides.pdfIn PDF document text
    • http://dapurixid.sportsontheweb.net/bizuguxazu.pdfIn PDF document text
    • http://baltika-trans.ru/fanudilakinetezemusinotd0ac2.pdfIn PDF document text
    • https://kofaxikizija.weebly.com/uploads/1/3/4/3/134336932/gapes-dagoregovifebe-fitaba-ramowuwawamejix.pdfIn PDF document text
    • http://rexonina.medianewsonline.com/betwixt_and_between_albert_camus.pdfIn PDF document text
    • http://dasiwujupuna.sportsontheweb.net/assimilation_and_dissimilation_in_phonology.pdfIn PDF document text
    • http://xuxijosut.sportsontheweb.net/galid.pdfIn PDF document text
    • https://kebomekol.weebly.com/uploads/1/3/5/3/135349545/xewozalomuza.pdfIn PDF document text
    • https://mufebomilizupa.weebly.com/uploads/1/3/4/6/134608191/vixagibidinasij.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://tiwosutodegadax.onlinewebshop.net/ketozemojebuzoja.pdfIn PDF document text
    • https://5b949be5-44ef-49af-96c7-0ebaa8fe632e.filesusr.com/ugd/3402b1_76b8ffc38e7f4a399ed5b6dab873984d.pdf?index=trueIn PDF document text
    • http://pasifowon.atwebpages.com/canon_rebel_xt_battery_pack.pdfIn PDF document text
    • https://a208a2de-cee2-48c2-86e3-c620a022946d.filesusr.com/ugd/dda32d_13d7f57332d2400b852cc2d1c24adbcc.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00033fd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33FD2 5756 bytes
SHA-256: b3d387b84b39e624538dfa5f3dad8521c3d491e0376091827b5698db1da82148
font_01_sfnt_off0003537e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3537E 12660 bytes
SHA-256: 6d2f8a7c819440ff1837397cc95bfd666f6da363405863f87c2642947ff22041
font_02_sfnt_off00037c39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37C39 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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