Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c667d87ee464d66…

MALICIOUS

PDF

77.7 KB Created: 2021-04-02 03:55:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 028d5ffc147f886d900424b2dead4f86 SHA-1: b5ed65fafb6af4ba334869045c87bd5f60fe9f3a SHA-256: 9c667d87ee464d66209e7c3c0c6528ecdc9ef243a35a70897214685c8c77e3ce
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that mimics a search query for a popular movie, likely intended to trick the user into clicking through to a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://druttle.ru/wix?keyword=weathering+with+you+full+movie+eng+sub
    • http://xamojopilupivo.scienceontheweb.net/54968111254.pdf
    • https://static.s123-cdn-static.com/uploads/4419849/normal_5ffb2b7a8f9ad.pdf
    • http://megidexabaror.mywebcommunity.org/popapesezikufesani.pdf
    • http://tulumiv.medianewsonline.com/xemadadutigar.pdf
    • http://danoguvokapijof.medianewsonline.com/zugupefim.pdf
    • http://tigadugutuvatix.mygamesonline.org/ejercicios_para_ordenar_oraciones_en_ingles.pdf
    • http://wosedumuf.mywebcommunity.org/nemaw.pdf
    • https://static.s123-cdn-static.com/uploads/4497081/normal_5fdffae685807.pdf
    • http://saxobupazes.sportsontheweb.net/60298948162.pdf
    • http://xatovapotogu.mywebcommunity.org/basel_3_framework.pdf
    • https://cdn-cms.f-static.net/uploads/4448995/normal_60303485b1ccd.pdf
    • https://cdn-cms.f-static.net/uploads/4373797/normal_604b95be03fa1.pdf
    • https://static.s123-cdn-static.com/uploads/4370052/normal_5fcef8fc85d94.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://noxumalog.onlinewebshop.net/pibetawujot.pdf
    • http://satogitexuvo.myartsonline.com/92256220736.pdf
    • https://uploads.strikinglycdn.com/files/cb7fd1ef-570e-4043-81e5-65778931afc4/gisakubukegobejidamesasa.pdf
    • https://uploads.strikinglycdn.com/files/2a4516bc-2165-4c54-9493-cd4895504bc2/kaloroduzutowod.pdf
    • https://uploads.strikinglycdn.com/files/fb139958-cd4e-4d83-959f-106efaf386ef/39655432053.pdf
    • https://uploads.strikinglycdn.com/files/315dbf3c-b990-44bd-aaf9-baddc5e3c4bb/types_feelings_list.pdf
    • https://uploads.strikinglycdn.com/files/106ff2c5-a8a3-41fe-ae1f-c5e7c422d2d5/my_sharp_lcd_tv_wont_turn_on.pdf
    • https://uploads.strikinglycdn.com/files/052c778c-1918-42e7-ad78-e5d8a2223534/is_the_ram_5.7_hemi_a_good_engine.pdf
    • https://uploads.strikinglycdn.com/files/ff89bcec-e307-44ca-9c1d-b333762ee78f/mivuxixa.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f384.bin
22ff650b3ce284a2d266c1ab1b27c30ec3353bfc4ea2920d6002ff687f10475e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF384 5588 bytes
font_01_sfnt_off00010687.bin
3fca31d6bf927eff55be3934d5bec5649a328efcc617cf087ab0764ae601da9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10687 10204 bytes

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