Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb1ddfb4a3c485a1…

MALICIOUS

PDF

82.1 KB Created: 2021-05-05 09:45:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f2bf3dfe6f7130a2ff1f09dae3c72e10 SHA-1: ea15a64f9630f5e4b725cf9a04e0022406776560 SHA-256: bb1ddfb4a3c485a150743192c9a1eab1dea3d80b67e79a5295e5aff9ef0f0304
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 0.9993

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://soxebez.ru/strik?utm_term=how+to+use+self+in+python+classes PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4480399/normal_6002d803ebe4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387235/normal_606cd5c66f897.pdfIn PDF document text
    • https://cdn.sqhk.co/ronofumito/eicTyOJ/gebimor.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463808/normal_5fe2f21a080af.pdfIn PDF document text
    • https://cdn.sqhk.co/zupitefa/cifGdja/airtel_recharge_postpaid_internet.pdfIn PDF document text
    • http://kosamaritaj.getenjoyment.net/weight_loss_diet_menu.pdfIn PDF document text
    • https://cdn.sqhk.co/zewumirapeb/jQhWNjg/favutabutilujadafal.pdfIn PDF document text
    • http://volulolusawaz.mygamesonline.org/kewulozeranawi.pdfIn PDF document text
    • https://cdn.sqhk.co/pigevikuwi/zijjfhi/pozodotan.pdfIn PDF document text
    • http://palaxofivuleduj.medianewsonline.com/olympic_weightlifting_beginner_program.pdfIn PDF document text
    • https://cdn.sqhk.co/gowamojon/gj1jdjj/14621458471.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/nijudow/jipebakuvodasiganube.pdfIn PDF document text
    • http://mifotabelimudon.myartsonline.com/the_gabriel_method_21_day_meditation_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/koxidasodila.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/how_to_practice_chord_inversions.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/adverbs_of_frequency.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/attendance_system_using_android_studio.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/limuvuzakusamejoke.pdfIn PDF document text
    • https://s3.amazonaws.com/bolovopizonuki/xupakubokokubarirokepipe.pdfIn PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/mapalorupibisujara.pdfIn PDF document text
    • https://s3.amazonaws.com/patilawasu/fuwejoxukakemiwa.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/4635575725.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/kuwaramekolukadazur.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/how_to_fix_a_bose_remote.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_off00010176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10176 5160 bytes
SHA-256: b0e9f8f24c847482e75499e31c7bc0241c684ffec0cc1aa75448bec44c0d9509
font_01_sfnt_off00011324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11324 11468 bytes
SHA-256: bdc74112e4c8b79a368532d6a3bd78a12406eb94a89ed7ce7142b37dc64e991b

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