Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8cdfb32cdaf484b…

MALICIOUS

PDF

81.8 KB Created: 2021-03-19 19:44:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 12b20dcc895107d074e9b64a0d791028 SHA-1: 7728e39b9d3b7d656e3dc7df1ec5323881c8a778 SHA-256: f8cdfb32cdaf484b62a92dffa20abd620d199b0ecf6167b7c6d937ce09d55fe8
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The embedded URL 'https://soxebez.ru/award?keyword=english+vocabulary+word+search+pdf' suggests a phishing attempt disguised as a document. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://soxebez.ru/award?keyword=english+vocabulary+word+search+pdf PDF link annotation
    • https://cdn.sqhk.co/xamitarerivu/jgcgfic/madalogexol.pdfIn PDF document text
    • https://cdn.sqhk.co/jogowijalaro/igLhbjc/a_dozen_a_day_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420917/normal_6036c2813cf5e.pdfIn PDF document text
    • https://cdn.sqhk.co/sufokorume/hiwJiib/zain_payment_jordan.pdfIn PDF document text
    • https://cdn.sqhk.co/jasowipe/Xrvhhih/assassin_s_creed_odyssey_companions.pdfIn PDF document text
    • https://cdn.sqhk.co/bopelara/gxjjA1y/slifer_the_sky_dragon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384145/normal_60400873a16a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393639/normal_5fd120cb7b984.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492257/normal_603bbb1133382.pdfIn PDF document text
    • https://cdn.sqhk.co/gijimexuv/Lj63gji/dj_marshmello_face_reveal.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387825/normal_6004b847f185e.pdfIn PDF document text
    • https://cdn.sqhk.co/toxinize/igJ3Q35/super_go_kart_for_sale_under_200_dollars.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446497/normal_60006ace181c4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vobewegogiz.rf.gd/bazakudaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60b16f25-af58-4a07-9fce-b10c76a810a4/kikatu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bd9bfc7-7ad6-4c37-8beb-8411f9bf2051/pokeboroxuguzaxonaxulan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/802c842a-460d-4c58-8325-a8f44567fed6/best_economics_books_in_india.pdfIn PDF document text
    • http://josisuvo.epizy.com/gupotufatibuxosavuja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9c45af0-170c-4ce9-a2aa-96f67fb9c5bc/samsung_55_inch_mu7000_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c5cfe3f-f6c7-4cda-b892-16b1825da8d9/mossberg_500_age.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_off0000ff27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF27 5768 bytes
SHA-256: 0f237d491aecf6e817cf9cde57a7d3975c2901a1acb859222d011f3e5458a337
font_01_sfnt_off000112e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112E4 11628 bytes
SHA-256: a9a1d95b4085b842b1cc3a9336f5e0d0df4f66cf6fd5b75f8708dd5b9712ee14

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