Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ffddde013271cb3…

MALICIOUS

PDF

235.3 KB Created: 2021-03-29 10:18:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 393a35fb69924273254c8327c076856b SHA-1: 580c73e17fa8faefd47030fa100102a755763e31 SHA-256: 8ffddde013271cb350f1ee16d15699ba3de980ca892154bf36c49c767751685f
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL, https://botokaw.ru/wix?keyword=dragon+ball+z+piccolo+height, is the primary indicator of compromise, likely leading to a phishing or malware distribution site. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to redirect the user to this external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://botokaw.ru/wix?keyword=dragon+ball+z+piccolo+height PDF link annotation
    • https://katesagi.weebly.com/uploads/1/3/4/8/134864962/sodabadigipak.pdfIn PDF document text
    • https://mazazujusuvazix.weebly.com/uploads/1/3/1/8/131856432/sivolowig_daseparobudiz.pdfIn PDF document text
    • http://puveputado.sportsontheweb.net/longman_academic_reading_series_download.pdfIn PDF document text
    • https://guverududilo.weebly.com/uploads/1/3/6/0/136086053/mupejukevame.pdfIn PDF document text
    • http://linorusani.iblogger.org/toyoset_kerosene_heater_manual.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sirerig.epizy.com/62764906938.pdfIn PDF document text
    • http://pikubub.onlinewebshop.net/blank_spelling_test_template.pdfIn PDF document text
    • https://0503187d-52cd-4237-9521-a3cb9bf551ae.filesusr.com/ugd/5bb01c_5f567479b58b411e896611cccf6bc653.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xukirizugukugi/44850528857.pdfIn PDF document text
    • https://s3.amazonaws.com/polojuliragam/togir.pdfIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/uniforme_de_bacteriologia_universidad_javeriana.pdfIn PDF document text
    • http://rukaxofu.rf.gd/basic_korean_language_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zulezov/86479184958.pdfIn PDF document text
    • https://09ec9d85-9312-4337-94d0-b84080e05f2e.filesusr.com/ugd/ac0094_ad7242ca2155478299f7a9a058ac2dca.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/womirofop/bummi_lied_text.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000353bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x353BD 4464 bytes
SHA-256: b1f42f66b76a1e413a4335bdb6385448472a1951ffcaed5c4036702ce56aa03d
font_01_sfnt_off00036360.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36360 5204 bytes
SHA-256: 46d38eb49d821623de694f199db510803cf735a767c26c68802be09a47a11bee
font_02_sfnt_off00037519.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37519 13480 bytes
SHA-256: 3a666223913f1efa248dd87a6f21ba96f9324a77fe1a481f80c2340dbdccf629

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