Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1a790c12174ef92…

MALICIOUS

PDF

89.2 KB Created: 2021-03-24 08:09:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c820f1f2f273815a3268de56c5e278f SHA-1: dff0d923d100e84d51066981e2ca242f039b9b64 SHA-256: e1a790c12174ef923dcbd16ce75c7c26d014a22119c340a9870aa5b4c7f20e53
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The presence of embedded URIs, such as https://crophysi.ru/strik?utm_term=sketchup+make+up+2017+download, suggests the document is designed to redirect users to external sites, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains references to 'Sketchup make up 2017 download', reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://crophysi.ru/strik?utm_term=sketchup+make+up+2017+download
    • http://probmake12.xyz/what_letter_reading_level_is_magic_tree_housexxj3p.pdf
    • https://dawejufajipamoz.weebly.com/uploads/1/3/5/3/135350304/7908d57ce6.pdf
    • http://dejamorije.scienceontheweb.net/que_es_el_analisis_pest.pdf
    • https://cdn-cms.f-static.net/uploads/4406241/normal_6033ba8159436.pdf
    • https://cdn-cms.f-static.net/uploads/4411503/normal_603a889779e07.pdf
    • http://dawexefif.getenjoyment.net/14241368388.pdf
    • http://hookup756.fun/nys_insurance_fund_disability_benefits_payroll_reportrov9u.pdf
    • https://cdn-cms.f-static.net/uploads/4467318/normal_601e2724d1eae.pdf
    • https://cdn-cms.f-static.net/uploads/4388416/normal_603da8b23cac1.pdf
    • http://peskomment.ru/nudegegoxh0jt4.pdf
    • http://goproonly.com/25971723496h3utb.pdf
    • http://boraguw.medianewsonline.com/27177064169.pdf
    • http://stassikorskyi.com/aircraft_cruise_performance_chartsg1dyz.pdf
    • https://nusiteraj.weebly.com/uploads/1/3/5/3/135347212/6499140.pdf
    • https://xexidizufom.weebly.com/uploads/1/3/4/5/134508107/jafefasaf_sinex.pdf
    • http://donbetosstreettacos.com/depression_and_other_magic_tricks_by_sabrina_benaimjpmxi.pdf
    • https://static.s123-cdn-static.com/uploads/4449766/normal_5fcf2fea0560b.pdf
    • http://bubble1.space/rubexijubeniruwem50fe9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/a8558eee-b25e-4e4d-8dab-fe276671d032/60895045211.pdf
    • https://uploads.strikinglycdn.com/files/26441d4a-930a-4013-935b-8c799aba31f0/line_6_pod_xt_live_review.pdf
    • http://gixejemazob.myartsonline.com/54916799523.pdf
    • https://uploads.strikinglycdn.com/files/cbc01b04-a294-4a4c-b11d-b9ca426f0b0a/tissot_watches_prices_in_sri_lanka.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000104c8.bin
e4a9868792af0abebec8ee07d066f92b8ca74807feb2553c3e792948119f32ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104C8 5704 bytes
font_01_sfnt_off00011835.bin
a20e3e6b86b11c701c52d8d1c78c2d2ca371a4af1cef6e39e8b3f81a2fbf735b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11835 11624 bytes
font_02_sfnt_off00013ffe.bin
7549d30c192a5ae521da62e37345fe96981415672a61ad8efeb7655d6777f83d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13FFE 16320 bytes

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