Malicious PDF — malware analysis report

Static analysis result for SHA-256 39d5a06406cbc903…

MALICIOUS

PDF

81.1 KB Created: 2021-02-28 23:56:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: ab0fe3a2d4944ec91e77bb7d43061951 SHA-1: 7020a536f12f26086098f3db29ed00cc0ef94c1e SHA-256: 39d5a06406cbc90353670f7bea99f6ee372593d6547fdf42ac50a7e42eae9265
104 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 presents a deceptive download button. 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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://resalured.ru/strik?utm_term=rpg+maker+vx+ace+tilesets+free+download PDF link annotation
    • http://rexonina.medianewsonline.com/educational_research_quantitative_qualitative_and_mixed_approaches_7th_edition.pdfIn PDF document text
    • http://vijexibat.mywebcommunity.org/apc_offline_ups_br1000g-in.pdfIn PDF document text
    • http://lamaded.mywebcommunity.org/tixajutedogazevupuzenen.pdfIn PDF document text
    • https://cdn.sqhk.co/teketerep/gP5iahe/banggood_easy_online_shopping_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480591/normal_6022eb3f3aec1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377663/normal_6025f594a9bbb.pdfIn PDF document text
    • http://mujoxoluvisukid.getenjoyment.net/how_to_play_the_drums_for_beginners_youtube.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467325/normal_6013f4ec1f9ad.pdfIn PDF document text
    • https://cdn.sqhk.co/dukosisevu/6Ab2hgc/27658067423.pdfIn PDF document text
    • http://dujojiwasemob.mywebcommunity.org/jojelibiteburizak.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/libusamagowuvo/biostatistics_introduction.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/bal_hanuman_full_movie_in_telugu.pdfIn PDF document text
    • https://s3.amazonaws.com/fejatepudopito/emergency_contact_phone_numbers_template.pdfIn PDF document text
    • https://s3.amazonaws.com/vavebufevodutob/clueless_crossword_geometry_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/kefevuwefawaver.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/jelazafukinigewugomufudu.pdfIn PDF document text
    • https://s3.amazonaws.com/moduluzuxikari/brochure_templates_real_estate_illustration.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/free_slideshow_template_premiere.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_off0000fc81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC81 5768 bytes
SHA-256: 9967a307d9269acb0c498abd32e648fbe8d6c953e920ba1d6fa7b7a2384203b6
font_01_sfnt_off00011031.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11031 11352 bytes
SHA-256: 24506c73fd7c8686026fa82f28c1ee79d691592bdb1349e44b7e3e59aaf3d373

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