Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee405a6ec45306ee…

MALICIOUS

PDF

81.3 KB Created: 2021-03-24 10:29:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f10f772a5f0f783f5dc8cdefa5de965f SHA-1: 05dc6d240c59d7799fae83872e79dc679180ddcb SHA-256: ee405a6ec45306eed0cc10acaf34fc0c4070b79ec0f4667ecab038183cc96157
156 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 a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/wix?keyword=kotor+2+jedi+guardian+build PDF link annotation
    • https://sudarotabodubig.weebly.com/uploads/1/3/1/4/131407445/tufofoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475999/normal_602cfb5eed766.pdfIn PDF document text
    • http://springital.fun/mathematical_programming_techniques_kambolir4i.pdfIn PDF document text
    • https://sijetuso.weebly.com/uploads/1/3/4/4/134499475/jomapenab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373264/normal_5ff55e1c67a10.pdfIn PDF document text
    • http://organicnu.info/4760701525421vq1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422378/normal_600cef45db25b.pdfIn PDF document text
    • http://wordwild-store.com/180262565450moo7.pdfIn PDF document text
    • http://pubguckazan.com/bhagavad_gita_slokas_with_meaning_in_telugujuii3.pdfIn PDF document text
    • https://raketesi.weebly.com/uploads/1/3/4/6/134632322/adcb7422b91088e.pdfIn PDF document text
    • http://stopro.store/android_emulator_for_pc_android_7lo9kx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369333/normal_5ff15bfe52002.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
    • https://s3.amazonaws.com/ninasivol/click_clack_moo_cows_that_type_plot_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/alita_battle_angel_2_full_movie_download_in_tamilrockers.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/wrong_turn_5_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tunenijexe/la_ciudad_y_los_perros_audiolibro.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/how_to_reset_a_cabrio_dryer.pdfIn PDF document text
    • https://s3.amazonaws.com/saxefi/89138093332.pdfIn PDF document text
    • https://s3.amazonaws.com/wemupajese/dosib.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D1 5012 bytes
SHA-256: b4a2228d27eccf66f25ddd07298cdb3273dad5fb5e3a279bbfd3b32c576a8cae
font_01_sfnt_off000105f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105F4 10628 bytes
SHA-256: 7f2fca3f72a0cb2196e39cfb60ed8d8f06fd2a207b46ce33f968878ecfd84749
font_02_sfnt_off00012a46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A46 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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