Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9c77f82ba441baf…

MALICIOUS

PDF

75.9 KB Created: 2020-12-21 08:57:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 15fa44302943e631fe3b08b0cbacf1ba SHA-1: dfed429ad01175c6c699ef8e53b944ee2d5a0938 SHA-256: c9c77f82ba441baf2f89d4daf58ea691e32a76e2c0765d90b77ddbaef577b6e0
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=shopping+list+ideas+cheap PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403565/normal_5f956f46a75e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467306/normal_5fc2c36ca2369.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fdd2b2255b18a2b82c09c96/t/5fde2b2e5809ae3434f3766e/1608395567742/darth_plagueis_descargar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1420490-f249-427f-a1f0-ca9a8b611869/75745757609.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d9e8451-137f-4d3a-b799-3d5c07f2f2a5/osrs_canifis_agility_xp_per_hour.pdfIn PDF document text
    • https://s3.amazonaws.com/xonaxevetaf/21681813425.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c33e7a69-8931-4167-a1e1-1a04af14e3da/debatarosofofonapobeja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/454a1e2b-b97c-4db6-b733-e9406b7a9345/punetipeviwotekusarup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d398c711-35ea-4136-8e59-bcb56e87c31c/main_idea_worksheet_5_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/dilani.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/jedudenimotusu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acd89a43-1d05-43c6-aae3-f1e06cd6458d/rag_rugs_for_sale_handmade.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf62a7a3-ff6d-4a11-bc22-48a409677418/jabardasth_hyper_aadi_videos_downloa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68583974-c915-4eb0-922a-0bb827590dff/53691151503.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/chairmanship_honor.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_off0000eab8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAB8 5344 bytes
SHA-256: c7b456fb6a7d52173eb2e834a6259a5590cf6912d01dadcf6472c20cda63d988
font_01_sfnt_off0000fce2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE2 11208 bytes
SHA-256: 91a9e611838c2201423c2695b8609746c65013d475ce5365c36894c50ddbd5b6

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