Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e4ed574f243ed90…

MALICIOUS

PDF

74.1 KB Created: 2021-04-03 00:05:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ee934e8d102bd5d523b447786a1615e6 SHA-1: 9d1e3753c3567c40211c930090c0c6e7e76721a4 SHA-256: 9e4ed574f243ed90da62b8d6766fbe8753c36d394c11e1b101870b5da9a78309
164 Risk Score

Malware Insights

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

The PDF document contains numerous external links, indicative of a link farm or phishing attempt, with one URL specifically mentioning 'movie download in hindi dubbed'. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of embedded URLs and the heuristic 'PDF_SEO_LINK_FARM' indicate the document is designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://nipisod.ru/strik?utm_term=the+shack+full+movie+download+in+hindi+dubbed
    • https://cdn-cms.f-static.net/uploads/4459162/normal_601f74aa7162d.pdf
    • http://pipemezunowaweb.22web.org/did_simba_have_a_son_or_daughter.pdf
    • http://rabisoluvilava.iblogger.org/chore_chart_template_daily_weekly_monthly.pdf
    • https://static.s123-cdn-static.com/uploads/4383300/normal_5ff70fb758825.pdf
    • http://helpverifybadges.com/dagefezomusowubhnzr.pdf
    • http://power-guard.shop/512898957505rlz0.pdf
    • http://disconto50.pro/python_http_basic_auth_requestv0yp6.pdf
    • http://item-mask.top/snes_game_downloadsgz18b.pdf
    • http://robertferrell.net/pekidovutetovimerqu438.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://82656f1f-dd0f-4426-89ca-c5688288f975.filesusr.com/ugd/56de54_e4c172a472044b04a14bda8c219848e1.pdf?index=true
    • http://lifenovofelajo.epizy.com/analytical_writing_assessment_verbal_mcqs.pdf
    • https://d5fd0048-bb8d-45a1-ba21-28d1cb0b7162.filesusr.com/ugd/5e8de6_10c14c1f211d4976a2da61a174f98441.pdf?index=true
    • https://eac5c218-d238-408c-98a6-8ff0ecbb25fc.filesusr.com/ugd/b1277d_b38ecc17807042249a9176ae7f83b2f1.pdf?index=true
    • https://932aa67c-856a-4fda-9fc8-fe3f50d4acc2.filesusr.com/ugd/a25eee_e8c75a64c3ba427a9e7d3a1a5e1581a5.pdf?index=true
    • https://ed8bc375-cd54-49ab-9ddb-988cb5b2fc3d.filesusr.com/ugd/3f3824_4542f0b4f5f342efa3cabd054b9d4f87.pdf?index=true
    • https://72a23b54-95c1-47c0-80d6-f7b1310faeb8.filesusr.com/ugd/65b209_75d8a6c7b57e4ba0984ced4e4c5ed2f3.pdf?index=true
    • https://s3.amazonaws.com/tikofaketonub/89335304051.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_off0000e428.bin
5d908fb257f0953c32c94bac924b004b38ffd1d0ef6d8ac14403c17c086b6a6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE428 5472 bytes
font_01_sfnt_off0000f6bb.bin
b2aa9ed1c0313b47d87fe20e7b6c3a78ccf8522ff62081e4073181c47f468989		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF6BB 10584 bytes

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