Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ac1050da913bd32…

MALICIOUS

PDF

72.6 KB Created: 2020-11-30 19:52:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 058db679c20a06c8af8b4c0b513bd4e3 SHA-1: 151fe869e19bd9965e161494fe67e9fff1bf3673 SHA-256: 8ac1050da913bd32f905e46009d98d0427ab611b5437805446db160c45308d93
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 0.9997

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://traffnew.ru/strik?utm_term=www.btinternet.com+my+account PDF link annotation
    • 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://uploads.strikinglycdn.com/files/7b1c9637-a113-40da-8e99-2005b10cd27e/intro_to_ecology_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cad3115b-b669-40a0-9aea-adcb14159a0c/budunatu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc11858e5c7695ca99cc683/t/5fc299503c02f22b9d61a396/1606588752632/protein_synthesis_worksheet.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf48f3145a8629dca706a5/1606371572223/fiverr_conversion.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0b5bec30a162e0c519083/t/5fc0d733f3de5e49b583f84d/1606473526880/24137114287.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2bc52c6229360ecb8cfc0/t/5fc4dff3bc819f1cf471a081/1606737907292/little_bill_cartoon_cast.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a72aa52c-61d4-44bd-b957-f76b9e87da2c/vb-mapp_milestones_assessment.pdfIn PDF document text
    • https://s3.amazonaws.com/naxozelozude/entourage_season_1_subtitles.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe6b179d793648405fbff7/1606314775793/black_and_decker_single_serve_coffee_maker_canada.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5190f81c9a2a0c98b497/1606373776258/jacksepticeye_the_beginners_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/n_s_a_p_full_form.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_off0000d82a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD82A 4996 bytes
SHA-256: caf073f3e494932c188a727e59f4df42d851e59deca338fb3fbc5ed6ffe2d84d
font_01_sfnt_off0000e920.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE920 9020 bytes
SHA-256: 80c006a5c6abeb1da8ec95f67dad70120cab37a644debd72d4ce8eb316d4c7fd
font_02_sfnt_off00010812.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10812 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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