Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccfc0cdb5046af03…

MALICIOUS

PDF

83.6 KB Created: 2020-11-12 12:44:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 95e82877f5ad7db9cd1ecd73fe0a2b44 SHA-1: d353ae4173da615936d1450b2e02f98130e9855d SHA-256: ccfc0cdb5046af031e2b769bd81ba698907938555dbf755aab9cca3a7dee5bda
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://traffine.ru/123?utm_term=cations+and+anions+worksheet+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4394061/normal_5fa07b6623bac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379969/normal_5f8ff3db2e3f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379964/normal_5f8f3f83811f2.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://uploads.strikinglycdn.com/files/537702e4-83c9-4a91-9ad8-ca3305315689/10896398489.pdfIn PDF document text
    • https://s3.amazonaws.com/kizuporowefib/34965090454.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24846e9b-7089-478f-933b-7da850a653c9/57738080437.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d2983e9-a3fd-4bef-b46b-1986ed553725/nisuxeniz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c8e89f1-d562-4bd3-ba14-54440d372040/alko_h1100_shredder_spares.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26b15041-4064-4e0a-8581-1091ad4abe01/boys_in_the_boat_study_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31697124-c6bb-446b-9c1a-e476f5a2994b/227381549.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/156c9b93-416e-409f-8fd3-a6b085322d76/lerukereteneza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd223d8d-5872-4a4d-a5f8-54898f62368b/lamefuguli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a02a54c5-9811-4bb2-9c12-88fbdf0d0f90/jipijinurobetatadifekati.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/867907e5-7257-4c2f-87bd-93d9fd829bbe/23392138720.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebedf68b-892e-4e1f-aeb0-e70b6fa756c6/11429737652.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_off0000fdc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDC6 4848 bytes
SHA-256: e6292980b07826ca121fdae088bedb3299034215bfb24fb644f5f479cca5f8e1
font_01_sfnt_off00010e47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E47 10900 bytes
SHA-256: c683f6a11e680cdb9786730f04c5ef505943a577687a594bfe5e705d8c1c4a1e
font_02_sfnt_off00013379.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13379 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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