Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec9c5bd6d147e7b6…

MALICIOUS

PDF

75.3 KB Created: 2021-03-30 14:30:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 33c77581cc9228315f052390fa00367c SHA-1: 53b9cdb92747666a1232050d18db92249ef5ce76 SHA-256: ec9c5bd6d147e7b635223aa34f706250473b5ea155133a76bf2e5359955f2e36
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 0.9997

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://vilenefex.ru/strik?utm_term=how+to+cheat+at+liar%2527s+dice+red+dead PDF link annotation
    • http://domobifotuza.sportsontheweb.net/74269899633.pdfIn PDF document text
    • http://puwexakibo.iblogger.org/tamil_new_hd_movies_app.pdfIn PDF document text
    • http://budokudepa.scienceontheweb.net/rifaluvazomifajakit.pdfIn PDF document text
    • http://xizugef.medianewsonline.com/70565496094.pdfIn PDF document text
    • http://fejavodexata.getenjoyment.net/loxudej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489975/normal_604cd4ae68e85.pdfIn PDF document text
    • http://basidugom.mygamesonline.org/wirupu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414851/normal_60320239599c7.pdfIn PDF document text
    • http://duxogesubuz.22web.org/56137597119.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/bufipevuril/anger_of_stick_5_mod_apk_revdl.pdfIn PDF document text
    • http://towirasoruxapob.rf.gd/ancient_civilizations_of_africa.pdfIn PDF document text
    • http://vinilobenodik.epizy.com/what_is_the_best_ccrn_study_guide.pdfIn PDF document text
    • http://detuxidamuw.rf.gd/download_software_to_word_untuk_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/gazivemon/85678487488.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/21582324717.pdfIn PDF document text
    • https://s3.amazonaws.com/nuvukivaxiren/wimaxitirewimumeworu.pdfIn PDF document text
    • http://jonutozomekuna.epizy.com/allan_kardec_que_es_el_espiritismo.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/2642088431.pdfIn PDF document text
    • http://bususetut.epizy.com/90402071879.pdfIn PDF document text
    • http://ditinalozevid.epizy.com/terraria_yoyo_guide.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_off0000e9f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9F4 5112 bytes
SHA-256: 2e64088a92d790b7e4070a856ea326974a93e2b6874a1ae92cef3577588c1a61
font_01_sfnt_off0000fb67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB67 10672 bytes
SHA-256: ff6642b06fd49dc25479295088bacf02d5b8933ef463685c3bbc78a461dda348

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