Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbd9754e06aed6f7…

MALICIOUS

PDF

78.5 KB Created: 2021-03-22 04:51:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 388f1e37583af1d91c845a62eaf88ec6 SHA-1: 90d16b8e8311a557c8d12fa38beb9333c039d786 SHA-256: fbd9754e06aed6f76b7bcdc1cd2e4ab6277c60a8791d002424d6f5cc75fa9c3d
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/strik?utm_term=a+midsummer+night%2527s+dream+no+fear+shakespeare+act+1+scene+1 PDF link annotation
    • https://soxoxalumowaju.weebly.com/uploads/1/3/4/7/134768556/4936242.pdfIn PDF document text
    • https://cdn.sqhk.co/lepowabog/iiM5Lje/best_alarm_clock_app_iphone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475577/normal_603f3ad108047.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489977/normal_5fd28fdf09364.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424953/normal_600413e62382b.pdfIn PDF document text
    • https://cdn.sqhk.co/vagizabibo/TheA9WV/pinball_3d_space_cadet_online.pdfIn PDF document text
    • https://labegemi.weebly.com/uploads/1/3/4/7/134709462/9670712.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489411/normal_603a877882741.pdfIn PDF document text
    • https://sidilatadafexu.weebly.com/uploads/1/3/1/1/131164021/zivevesupiminotoz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426267/normal_602b76c398e7e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449768/normal_5fc810048eff1.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzifixe/tibihKI/tv_games_today.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468286/normal_604fef7a40288.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483088/normal_5ff9d66abe31c.pdfIn PDF document text
    • https://cdn.sqhk.co/vimewiki/gvicljg/91460876766.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484834/normal_5fcdfdd153453.pdfIn PDF document text
    • https://cdn.sqhk.co/silakozafi/bjihigz/los_angeles_bus_map.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/baidu_er_video.pdfIn PDF document text
    • https://s3.amazonaws.com/nagudo/libro_metodologia_de_la_investigacion_hernandez_fernandez_y_baptista.pdfIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/15128007486.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/vofozobokobuse.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/bubble_bash_2_game_free.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_off0000f2af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2AF 5676 bytes
SHA-256: 1760831867179609bd066316ef8426293d71bd42ff7340c5f8ff0759d8df750c
font_01_sfnt_off000105ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105EC 10676 bytes
SHA-256: 8e2e44fd578f5f867d3697312b6261135163669c5f8eec42341bbebc4804f04e

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