Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6320d0adb387184…

MALICIOUS

PDF

80.5 KB Created: 2021-05-13 03:53:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cae01d0846cfa40c09d020e5656c43b6 SHA-1: 1b113f994d1e9a3d3166d755a450562adae80795 SHA-256: a6320d0adb38718499fe231ce3345b8e428da69a6f0f60a50ab1a9847add34ae
104 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate maliciousness. The presence of external URIs and a 'download button' heuristic suggests a phishing or malware delivery attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a potential download lure, likely involving JavaScript execution within the PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/strik?utm_term=chronological+bible+reading+plan+esv.org
    • http://sepozimog.scienceontheweb.net/posubugobozexet.pdf
    • https://cdn.sqhk.co/lupobikud/ihhcfib/vogezes.pdf
    • http://dosubodanes.mypressonline.com/31440765534.pdf
    • https://cdn.sqhk.co/sowumavag/gjQiipo/lonijuk.pdf
    • http://xesifavaner.22web.org/budget_templates.pdf
    • http://desajegurake.scienceontheweb.net/list_of_cell_organelles_and_their_functions.pdf
    • https://cdn.sqhk.co/jusupovexewa/diajdj4/ou_pg_cet_2019_hall_ticket.pdf
    • https://cdn.sqhk.co/pepupiribojo/cij35ii/69776468077.pdf
    • http://gezesapifo.22web.org/viraletanavo.pdf
    • https://cdn.sqhk.co/nuvexajamu/hfidrif/ferojefapirunomevatot.pdf
    • http://luvetikemo.66ghz.com/52984889066.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/megulu/57347414853.pdf
    • https://s3.amazonaws.com/kegovev/giviworizugenu.pdf
    • http://lixanixuzuki.rf.gd/12012177403.pdf
    • http://vidavizulovox.rf.gd/tatunerosopajavegopomiwe.pdf
    • https://s3.amazonaws.com/jenagubadopi/hakuba_cortina_weather_report.pdf
    • http://gafodix.myartsonline.com/madorafubokazore.pdf
    • https://s3.amazonaws.com/lijopavexanuse/film_habibie_ainun_full_movie_mp4.pdf
    • https://s3.amazonaws.com/wemofodi/mufuja.pdf
    • http://gevorewububew.epizy.com/blood_groups_and_red_cell_antigens_laura_dean.pdf
    • http://xesidif.epizy.com/55755413102.pdf
    • https://s3.amazonaws.com/dotivaf/don_t_starve_hamlet_guide.pdf
    • http://latilofu.rf.gd/97456323694.pdf
    • https://s3.amazonaws.com/jaxesabi/zetigitojixitopini.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef4f.bin
581f98c614a705537addaf82e90033b2dc137de4728a0bd087bbca1089b8fb0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF4F 5296 bytes
font_01_sfnt_off0001013e.bin
fc1413d1b63b08d7b62d5f83050854149695702e22a849017faf14882caab78b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1013E 10776 bytes
font_02_sfnt_off0001263c.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1263C 4324 bytes

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