Malicious PDF — malware analysis report

Static analysis result for SHA-256 45953b029d391bf8…

MALICIOUS

PDF

63.7 KB Created: 2020-12-27 02:43:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: b967b760d78de0153f1c34de097513b7 SHA-1: 37edae401b4398aac4424c5ee1231f406030d420 SHA-256: 45953b029d391bf850577e75bae76b46f9260c613b3231a110e4bed6ca4a0ff3
154 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 routes users through malicious redirector infrastructure. 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ggtraff.ru/strik?utm_term=ambulance+siren+sounds+in+words In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366057/normal_5f9b600c2c92a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373999/normal_5fd5fe91ecfd2.pdfIn PDF document text
    • https://cdn.sqhk.co/sabeludejem/rtHkghZ/hd_rainforest_wallpaper_for_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/juxerawabuf/0JOgfij/general_cable_conduit_fill_calculator.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/1cae9ea8-34ee-4407-b540-8cd0cce5ab0a/vapopodajivigogeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7482f89-dd5c-4997-84c9-16b6dcb08998/39053358600.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/17284348985.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/760c08ed-4bdd-49f8-905a-29ae57389d62/xatexomezefefupukuwepif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c785dca-bb4b-46c1-9388-c6deb0523145/nabenotigujidigu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2be9645-4fbc-47a7-aa18-e1be13b059b5/41934656120.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/zarelaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bbf1d0a-68ed-4509-bffb-11da3343c001/66369495183.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e6b5642-0c60-4f91-9589-a5804640197f/igcse_business_studies_revision_guid.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/3636249243.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_off0000b227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB227 5108 bytes
SHA-256: f4ea652784da97962392d97b8a97874c7d21f906c35494c26f03e550bbfbb5c1
font_01_sfnt_off0000c35a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC35A 9488 bytes
SHA-256: 9f5ded9009e8182f372456c32bd0190b227ccdc4fdb586e06456d5a461310689
font_02_sfnt_off0000e3b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3B1 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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