Malicious PDF — malware analysis report

Static analysis result for SHA-256 32167245306d1e14…

MALICIOUS

PDF

83.3 KB Created: 2021-03-07 11:57:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 96c6d45094345717215c1106e0e3641e SHA-1: 79b17a471c0165a00ce5b027418ef1b2855bb9c1 SHA-256: 32167245306d1e140329f102db59b942092338d26b8fc101cd856e63fe54afdc
104 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating it's a phishing trojan. The presence of an external URI pointing to a suspicious domain, coupled with a heuristic for a visual download button, suggests a phishing or malware delivery attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs indicate it likely serves as a lure to download a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ponafet.ru/strik?utm_term=what+was+agenda+21 PDF link annotation
    • https://cdn.sqhk.co/tanusulirava/jc2ZThm/81804376845.pdfIn PDF document text
    • http://nupewijanetari.medianewsonline.com/dakumatosoju.pdfIn PDF document text
    • http://pililiriniru.mypressonline.com/fipofokofaj.pdfIn PDF document text
    • http://ruwosiju.getenjoyment.net/jonozugexubemo.pdfIn PDF document text
    • https://cdn.sqhk.co/lidojuxuxiro/giihHie/free_antivirus_software_windows_10.pdfIn PDF document text
    • http://zixivudu.getenjoyment.net/76408321712.pdfIn PDF document text
    • http://mojofaza.mypressonline.com/panasonic_bread_maker_parts_singapore.pdfIn PDF document text
    • http://datekal.22web.org/english_activity_sheets_for_nursery.pdfIn PDF document text
    • http://rusakadovub.sportsontheweb.net/50160020848.pdfIn PDF document text
    • https://cdn.sqhk.co/gapekozuwa/iiBlbo1/67581429595.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/zonivezada/45420285713.pdfIn PDF document text
    • https://s3.amazonaws.com/rumezo/11107697478.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/how_much_oil_does_a_generac_8000_take.pdfIn PDF document text
    • http://vumamuv.myartsonline.com/gamupife.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff54f59b-70d6-4eda-8ef8-a2b704dadc99/2003_ford_mustang_mach_1_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/10417924662.pdfIn PDF document text
    • http://ruwiluleter.epizy.com/behavioral_questions_and_answers_for_freshers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/193abf8b-adda-4cc2-8aa4-0584ed02514f/can_a_dell_inspiron_1545_run_windows_10.pdfIn PDF document text
    • http://nubuwij.epizy.com/abstract_wallpaper_1920x1080.pdfIn PDF document text
    • http://xewewiwuxadul.rf.gd/80946662098.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_off000108ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108AB 5248 bytes
SHA-256: 439086a1e9799676b39cce674dbd24e880e611e19092457e0cc6474da116ee7f
font_01_sfnt_off00011aa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AA3 11044 bytes
SHA-256: 71c8a0fd6a1e99d19e23945a385e423327a336ec1f123197f261f7d416840ed9

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