Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e48ead40a079a12…

MALICIOUS

PDF

81.2 KB Created: 2021-03-22 00:05:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 571f8265e3475f4c2c54f1fccc4fb156 SHA-1: a8861dbf9c6348fff0bd96f65ec77d0fd65729f6 SHA-256: 7e48ead40a079a12b545ae06610f889028f6525b61eefe73a30a85e521b5d1a1
136 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of external URIs and the 'Password-protected archive handoff' heuristic suggest the document is designed to trick users into downloading a password-protected archive, likely containing a secondary payload. The document body, though heavily obfuscated, contains text that could be part of a lure. No scripts were extracted, but the PDF structure itself contains embedded URLs that are likely part of the attack chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://bologen.ru/award?keyword=apn+midas+trend+pdf PDF link annotation
    • http://nadipewin.mywebcommunity.org/17929381660.pdfIn PDF document text
    • http://bikelumonekodex.mygamesonline.org/lijureluperosufedegavotef.pdfIn PDF document text
    • https://cdn.sqhk.co/bepemuno/gc9jeid/cats_crash_arena_turbo_stars_codes_2019.pdfIn PDF document text
    • http://wimuzawoxi.getenjoyment.net/98009961064.pdfIn PDF document text
    • http://nanebaxexob.getenjoyment.net/kiwokevudum.pdfIn PDF document text
    • http://javosewo.sportsontheweb.net/ziwexevinakogigotik.pdfIn PDF document text
    • https://cdn.sqhk.co/kifukuvitog/cmTYjfx/tower_heroes_codes_mejoress.pdfIn PDF document text
    • http://jizerigozigalav.getenjoyment.net/56769597948.pdfIn PDF document text
    • https://cdn.sqhk.co/parikozug/WLzIgdp/desenho_da_masha_e_o_urso_para_colorir.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/panalipolifod/innova_3120d_update.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/42848775425.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/85462233023.pdfIn PDF document text
    • http://bugazepoja.onlinewebshop.net/can_you_void_a_contract.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/princess_party_invitation_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/how_is_ammonia_related_to_kidney_functioning.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/chf_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/28043637188.pdfIn PDF document text
    • https://s3.amazonaws.com/patilawasu/wahl_detachable_blade_clippers_for_dogs.pdfIn PDF document text
    • http://nujebij.onlinewebshop.net/57895720881.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/pokemon_masters_guide_chapter_15.pdfIn PDF document text
    • https://s3.amazonaws.com/kotidox/exercicios_de_nomenclatura_quimica_organica.pdfIn PDF document text
    • https://s3.amazonaws.com/rutufokedizon/87564641287.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/4543400343.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e65a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE65A 5144 bytes
SHA-256: c8c5ebdfb1613e5b75f990992cb070c81b1d5f929facae1c91a1dba869e21eee
font_01_sfnt_off0000f7c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C0 13668 bytes
SHA-256: 480630cc9805fde4d8c89a1ce61286357ec2323db69d40a80783b2f52ce766a7
font_02_sfnt_off00012075.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12075 16184 bytes
SHA-256: c18315bec79609bbd2440a4e60ccd97a11bc939d74b8cc22b3b5470f1d81c685

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