Malicious PDF — malware analysis report

Static analysis result for SHA-256 74b132e51b24ae48…

MALICIOUS

PDF

88.4 KB Created: 2021-05-18 00:33:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2e9539ab89947dc8483b7d21f19a3006 SHA-1: 1f61c6fd81dc9c34fe0cf5f74c2530236085262f SHA-256: 74b132e51b24ae484f9e078780a75eed2c50dbee10afb1d880f994bca72a8599
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://midufefew.ru/strik?utm_term=descargar+dragon+ball+z+budokai+tenkaichi+3+para+ppsspp+en+mega PDF link annotation
    • https://vumifedesonuzik.weebly.com/uploads/1/3/4/8/134849268/vogesebexupoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421462/normal_600fb1dd3c565.pdfIn PDF document text
    • https://rikinosi.weebly.com/uploads/1/3/4/3/134352476/5141350.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470524/normal_6042f3944c756.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490735/normal_5fe322d3e6cf2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489263/normal_6001119ea8f1a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368481/normal_5ff0740d4516a.pdfIn PDF document text
    • https://jabuvevakeg.weebly.com/uploads/1/3/4/6/134685488/5471869.pdfIn PDF document text
    • https://rowagikej.weebly.com/uploads/1/3/4/6/134678960/dovozojopavi.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/mevuzokekenojab/dirt_devil_power_max_pet_not_picking_up.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/fawixatofobibilumixe.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/japetibexo.pdfIn PDF document text
    • https://s3.amazonaws.com/wonumafubij/best_romantic_book_series_of_all_time.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/pride_and_prejudice_by_jane_austen_book_review.pdfIn PDF document text
    • https://s3.amazonaws.com/zubata/sloan_flushmate_503_dripping_sound.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/gexuja.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/supekiwaborobodir.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/bon_appetit_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/nademopor/buramov.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_off0000fe0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE0F 4060 bytes
SHA-256: 3cbb2109f10afa1bbe66829c2d5f9baac9b51ba56180fd658320a7435d74022a
font_01_sfnt_off00010c5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C5E 5904 bytes
SHA-256: 2c4e113c7135affac6639ed74c4d6dc221cf997a4ef2b320eae8a54628d88970
font_02_sfnt_off00012058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12058 23044 bytes
SHA-256: 0206a3992fe25c84502e188701b38020c270aa2b0aa35c3bfbea547578c891af

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