Malicious PDF — malware analysis report

Static analysis result for SHA-256 af8a4fe72ae1c468…

MALICIOUS

PDF

76.8 KB Created: 2021-02-28 04:47:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: edfe68d654a4002d01e36aff6b790ceb SHA-1: 9598f797d3dba7d9fce14f48e1ea978711c167ac SHA-256: af8a4fe72ae1c46898fd0f0704507a7b4bf134e9117d4e1208fb57bc7539ea2f
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://gimoguvi.ru/123?utm_term=the+secret+book+and+scone+society PDF link annotation
    • http://stopnutristrike.ru/eclipse_oxygen_2as1m9e.pdfIn PDF document text
    • http://giveaway2020.info/persona_5_calendar_guideyhaf6.pdfIn PDF document text
    • http://unityfree.xyz/wink_live_apk_for_iphonedmc3k.pdfIn PDF document text
    • http://samelike.site/how_to_install_britax_boulevard_car_seat_forward_facingled0b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470837/normal_5fd062560220a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492593/normal_602dad85b7738.pdfIn PDF document text
    • http://gnoogle.site/21293330556d6yji.pdfIn PDF document text
    • http://fitdieta.com/what_can_i_use_to_draw_out_a_splintery191g.pdfIn PDF document text
    • http://good-production11.site/26524436096j548d.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/salosibejodod/scientific_notation_example_problems_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tawosutosuxi/coreldraw_x4._exe.pdfIn PDF document text
    • https://s3.amazonaws.com/zedilegol/dota_2_beginner_guide_heroes.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/dazitoboje.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/logenelefazavid.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/flyff_int_aoe_bp_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/calendario_2018-_19.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/zamero.pdfIn PDF document text
    • https://s3.amazonaws.com/wemupajese/niwomorob.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/29242484876.pdfIn PDF document text
    • https://s3.amazonaws.com/minegikukovel/wexisexozodoxasin.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/gps_altimeter_app_android.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/juvafipatepufibimeribero.pdfIn PDF document text
    • https://s3.amazonaws.com/jazamerijekufol/business_valuation_case_study.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_off0000f01f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF01F 5248 bytes
SHA-256: 6d0bccec9f6f26dd25ef4403ec8fb65a56b465cd4bba67bf449c5f6347b842a0
font_01_sfnt_off000101fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101FA 10488 bytes
SHA-256: 11850f0a59532fbb7f09862c7b75116c99c17726a40fa1fb1947dad97ddb9acc

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