Malicious PDF — malware analysis report

Static analysis result for SHA-256 edb0844075431912…

MALICIOUS

PDF

93.5 KB Created: 2021-03-09 15:16:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 102fcd0e0858d5e470284b1d08368b29 SHA-1: 555b09c4cc69ac0c61d756f5b2a387b3babc6802 SHA-256: edb0844075431912b73e94c7a5884c76710c6ab34405021514fbe82239767e2d
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that leads to a domain associated with phishing and malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to deliver a phishing lure or download a secondary payload. No scripts were extracted, but the PDF structure and embedded URI are sufficient indicators.

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://ponafet.ru/award?keyword=function+of+chromatin+pdf PDF link annotation
    • http://vizazovabula.mywebcommunity.org/pdp_afterglow_lvl_3_ps4_stereo_headset.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478968/normal_6041313c76b90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425235/normal_602ec07215ff6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491669/normal_601610ea336d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406473/normal_6022bc2ca2642.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469645/normal_5ff89a53cafa5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472775/normal_5fddf559b906f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472783/normal_6036844be248e.pdfIn PDF document text
    • http://kumululurug.scienceontheweb.net/ashton_irwin_sister_age.pdfIn PDF document text
    • http://vumonivaxozutod.mypressonline.com/effects_of_colonialism_in_south_africa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376852/normal_5ff4266482a60.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444371/normal_5fe11dbb76592.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421764/normal_6041aa77e28b3.pdfIn PDF document text
    • http://tepoparupomo.medianewsonline.com/prodigy_hegelian_dialectic_the_book_of_revelation.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/64cd2b78-ac93-4e5b-8e20-96336fa61166/comentario_de_lucas_john_macarthur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f18a3ab-70be-47b7-8b02-081feb085999/32644274021.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8489dd41-049c-4b3d-8887-db87601e4a51/rusubelikunujoru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcdeec7e-f18c-4612-8c0e-c89b89bcc044/tozupilakanolosofikudat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/119f909d-e890-44ba-b049-e48fd7b81d5c/luwadapasefomepas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6676d61b-e2c8-49ea-8694-f4b7ed21be4b/mozizaxum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c520c73b-e096-4e22-a88c-9cec79fdd9ea/29052664920.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_off000133e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133E9 5140 bytes
SHA-256: 36f4106941ae6673b132b1b74d3b01a116208c1388bfbf8b711d4ee63a97aa0d
font_01_sfnt_off0001453f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1453F 10456 bytes
SHA-256: 3eef607991803946bf9de8af2b4652c964edb4159303b79d6b9379ba0f8d1c94

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