Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa018ece593b211a…

MALICIOUS

PDF

85.1 KB Created: 2021-03-25 13:15:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 74cad0cc5265511e8198b52d1f0174a3 SHA-1: 6ebc67d03e7e311dfd7b460ea620bc92346c61af SHA-256: fa018ece593b211aa9c63414ae0dfd9a1cba2ccebe31f9d671428a9e34c0c8eb
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ML and ClamAV, indicating malicious content. It contains numerous external links, many pointing to disposable hosting, suggesting a link farm designed to host or redirect to malicious files. The document body, though heavily obfuscated, contains keywords related to free downloads, aligning with a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://golowaki.ru/award?keyword=lic+jeevan+shanti+pdf+free+download PDF link annotation
    • http://larumutul.getenjoyment.net/test_analogias_verbales.pdfIn PDF document text
    • http://luziniwanemek.sportsontheweb.net/excellent_gif_mr_burns.pdfIn PDF document text
    • http://nejupike.mygamesonline.org/jomaderopazosuxuzokiteb.pdfIn PDF document text
    • http://deflecfcvy.best/keurig_mini_plus_cleaning_instructionsbb5wp.pdfIn PDF document text
    • http://xevedudox.sportsontheweb.net/internet_and_java_programming_notes.pdfIn PDF document text
    • http://rumigiwataj.getenjoyment.net/behavioral_economics_a_very_short_introduction.pdfIn PDF document text
    • http://lakegefufen.scienceontheweb.net/puxowabegolizatekanemu.pdfIn PDF document text
    • http://peludofnor.fun/kung_fu_tea_media_menu58glt.pdfIn PDF document text
    • http://netlysy.online/79872532076w03ly.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://jimanujomubil.epizy.com/aafp_isfm_feline_friendly_handling_guidelines.pdfIn PDF document text
    • http://kakuver.rf.gd/moruwenodula.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/43107835198.pdfIn PDF document text
    • http://vekejuf.atwebpages.com/lavazza_espresso_point_matinee_beverage_system_coffee_machine_m11121.pdfIn PDF document text
    • http://gebezivorubax.rf.gd/taj_mahal_essay_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/59631823587.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/pozomuvigod.pdfIn PDF document text
    • http://weparaxopulo.atwebpages.com/10255367180.pdfIn PDF document text
    • http://romezegipoxo.epizy.com/guided_meditation_deep_sleep_rain.pdfIn PDF document text
    • http://gexokole.rf.gd/13367536904.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9AC 5200 bytes
SHA-256: 569c7dc9c93a07035258ebf84406799767a80c235dd7ef8e0d7c8884e6228013
font_01_sfnt_off0000fb65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB65 11316 bytes
SHA-256: e33d5dbd87f796dc8e96c01b170802e5255168d570df4e7f2b4bc57634c2cc8d
font_02_sfnt_off000121a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121A5 16172 bytes
SHA-256: 6e699eab9a6fef16b3ea923df7b93ce1c5cbd97c7a594d359cd98c90be4a35f1
font_03_sfnt_off000136c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136C1 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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