Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fa915b60f730a8a…

MALICIOUS

PDF

79.8 KB Created: 2021-03-29 00:18:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: c405f70710c3d21c413da2fd7af629c7 SHA-1: 55f7668048c727611e6cc05b238b7885d880049f SHA-256: 0fa915b60f730a8aeed774a5260abed37506378cfc0065fc058d4163090930c9
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 0.9998

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://dafemum.ru/wix?keyword=audio-gd+nfb-11.28+%25D0%25BE%25D0%25B1%25D0%25B7%25D0%25BE%25D1%2580 PDF link annotation
    • http://wildber.store/napoleon_hill_law_of_success_amazonqbhp5.pdfIn PDF document text
    • https://cdn.sqhk.co/lepavenujal/7jfjdO9/tusasemeteruvelibif.pdfIn PDF document text
    • https://cdn.sqhk.co/xufilisakula/jiYiiia/ivanhoe_cafe_broadsheet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473410/normal_601aaa4b5c908.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475392/normal_600359156342e.pdfIn PDF document text
    • http://getbuiss.online/57395342003ame8y.pdfIn PDF document text
    • https://cdn.sqhk.co/nolugavetiri/gXjfhdE/sadowezusisijavud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384159/normal_60333e73cc7d6.pdfIn PDF document text
    • http://alphabitx.com/sign_up_for_chick_fil_a_app58q5t.pdfIn PDF document text
    • http://helpcontactform.com/newspaper_article_format_grade_12nf8hg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415321/normal_6047489585fd4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484365/normal_6050e30fb20eb.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/gonasidupij/bobinado_de_motores_electricos.pdfIn PDF document text
    • https://s3.amazonaws.com/divelikubapiwaj/55307667505.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/pisaweraveweligosemejuso.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/dekobivovimiwob.pdfIn PDF document text
    • https://77483064-5892-4b52-b419-66e751946b77.filesusr.com/ugd/ef7b09_3b3f49acdf5c425bbb4fe1e0626a43a5.pdf?index=trueIn PDF document text
    • https://6c49ff76-e13b-46da-8354-2e633d56f736.filesusr.com/ugd/211c2d_e8b44c0c88b943849a410bcb67875cac.pdf?index=trueIn 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_off0000ec09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC09 5708 bytes
SHA-256: ec50d7a91d4e887dead510b25f3ceac15b387b07469a8c1ff13ed25073bec49e
font_01_sfnt_off0000ff6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF6B 15720 bytes
SHA-256: edb0c6ab71966b49df81e31f6fed1dbf7559dbae525d31e2048a48d17882fb50

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