Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ea7763c6172f303…

MALICIOUS

PDF

75.3 KB Created: 2021-03-13 21:48:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: a2fc803b21c7e76e94f8ef145929db55 SHA-1: 88dc9e0676cba05a9f62954e5348963182444fec SHA-256: 2ea7763c6172f303bf76830b8ad239b63d6979de63c909db7a85271eaa2762e1
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one specifically pointing to a URL containing 'banking system project in java pdf', suggesting a lure. The heuristic PDF_SEO_LINK_FARM indicates a mass of external links, and ClamAV detected it as Pdf.Phishing.Trojan. While no scripts were explicitly extracted, the PDF structure and numerous external links strongly suggest a phishing or malware distribution attempt, likely leveraging embedded JavaScript for malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 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.
  • 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://kuzutuzo.ru/award?keyword=banking+system+project+in+java+pdf PDF link annotation
    • http://rujigituta.iblogger.org/chamberlain_41a5021-c_manual.pdfIn PDF document text
    • https://kobalogowitat.weebly.com/uploads/1/3/0/7/130776452/35aa311.pdfIn PDF document text
    • https://riregagofowa.weebly.com/uploads/1/3/1/3/131379776/1251514.pdfIn PDF document text
    • http://bilabugova.iblogger.org/jojo_part_5_meme_template.pdfIn PDF document text
    • https://likuwiwekadu.weebly.com/uploads/1/3/1/8/131857000/sogubiwobe_xatukamevi_luxasa_pexusajo.pdfIn PDF document text
    • http://akfb.online/bhojpuri_movie_hd_pictureh4w3i.pdfIn PDF document text
    • http://smeh-mif.space/14th_finance_commission_guidelines_assambp25a.pdfIn PDF document text
    • https://puxezemugip.weebly.com/uploads/1/3/4/3/134311794/labixuxiku_soteka_vaxujefude_pimaz.pdfIn PDF document text
    • https://nutuvujupakumap.weebly.com/uploads/1/3/2/7/132740288/vonodu.pdfIn PDF document text
    • http://tuimag.ru/what_is_5_litres_in_pintsgtlwc.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/nafibanefexex/rerefixubaj.pdfIn PDF document text
    • http://rebivik.epizy.com/educational_psychology_online_masters_no_gre.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/bepopizukefizetu.pdfIn PDF document text
    • http://wiputopi.epizy.com/wow_classic_frost_mage_leveling_guide.pdfIn PDF document text
    • http://nidolivudazos.rf.gd/cutting_practice_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/british_journal_of_sociology_of_education.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/giwut.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/thermal_insulators_and_conductors_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tafogusegabomu/korafenoganokujor.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/nezebagevadekol.pdfIn PDF document text
    • http://sovizurimi.rf.gd/copiar_formato_condicional_google_sheets.pdfIn PDF document text
    • http://zibakogemigana.rf.gd/cuales_son_los_sintomas_de_tener_problemas_en_los_riones.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/la_boite_a_merveille_chapitre_5.pdfIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/riwuj.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_off0000ea98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA98 5792 bytes
SHA-256: 8401e28a15927c61859648e48c56aee5c2c11591b73c7168af4342525ef5c0ab
font_01_sfnt_off0000fe5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE5B 9660 bytes
SHA-256: 432c962794a0cf4ede208ba866ce9dad750f47c37f438623fcc4c7373ec6f0e2

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