Malicious PDF — malware analysis report

Static analysis result for SHA-256 326caa633e6ed713…

MALICIOUS

PDF

63.0 KB Created: 2020-12-20 15:20:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 4e2ac1d05d73ff6ebcd277e7b8ac5ada SHA-1: 936bb24f45d18fbae8a5cde1d235c99721925308 SHA-256: 326caa633e6ed7138f36231aca1f93988ebad20e96c359028b44fbc6b48ed541
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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffset.ru/strik?utm_term=8+oz+chicken+breast+grill+time PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367300/normal_5f8fa2d998306.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385422/normal_5f8cca9664ea3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392862/normal_5fc534afd9bab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444114/normal_5fc13a90e9c4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379043/normal_5f9b26ca1f6fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470207/normal_5fbbaca34f43a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453754/normal_5fa799faeb07e.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/tumasun/vocab_for_ielts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66cf42e7-9aa2-4ef5-90df-875681ca2921/ancient_greek_instrument_used_by_bards.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a62221d0-6e29-4714-b1af-76a563fcc44d/7027478692.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f16f7d0c8f249d4106bd/t/5fca8797071c6625ee785fe4/1607108506140/41932268372.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd45d26b73e071f8795a13/1606239700239/kujiretizubowove.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc111b5ff13940aa240a14e/t/5fc599909ee0f32b87144e3e/1606785424859/moroccanoil_moisture_repair_shampoo_8.5_oz.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/intermediate_accounting_2_2019_valix_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/towifugisej.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_off0000af46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF46 5352 bytes
SHA-256: 393206895edb3adace9c913a1234f83c871ee1f72d7cd911a9616030010265de
font_01_sfnt_off0000c143.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC143 9340 bytes
SHA-256: 3410dfdf3075714f31e9ae618b2b356cfa9b3078f504d235329e89108dfb2f13
font_02_sfnt_off0000e12c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE12C 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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