Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ceed868a568d7a7…

MALICIOUS

PDF

73.2 KB Created: 2020-12-03 19:43:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: a4593a8d94e880da9865bf570bf2507b SHA-1: b90478379c3999e81c6151b722c09ab6b0e9e001 SHA-256: 3ceed868a568d7a7f1fc10f9574f8a22d80d0e7ea9ec29cdcfed782c61acd687
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://cctraff.ru/123?utm_term=the+green+ember+series+book+3 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4461516/normal_5fbd473a4f680.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378830/normal_5f91decc7afdc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427097/normal_5f9cdf24e8e3f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418558/normal_5fbddba07dfaa.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/5fc5c0a4a13a450bab15ac41/t/5fc74d30efc65c5b7a409b50/1606896946377/32266573032.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf05f4e98326c02d518a5/1606283360202/vodix.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc566ac3dfdd95b60f3409b/t/5fc70674a3696915e21ad0f4/1606878838186/amc_mobile_movie_showtimes_tyler.pdfIn PDF document text
    • https://s3.amazonaws.com/sedowedi/dexatorasub.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0028ac14dfd36feec75cc/t/5fc1f223fa04221c71651802/1606545956081/lapemutiz.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc27a90c14dfd36fefb8bc0/t/5fc81278dcb5b260796c6463/1606947449776/gitunobo.pdfIn PDF document text
    • https://s3.amazonaws.com/potamotaz/jewogawuvorozisapopoz.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbffc42bda9c57a97b92422/t/5fc3bade1972c46e3c0fd576/1606662878637/30568428830.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e4a011f6a41984859e8d/t/5fc6d26e5fecd2174b4bdaa3/1606865519216/tufevavugusiseb.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf544f61e25426e12f7ddb/1606374480279/rarazatuxejawebivedowa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2cbaa2bbd74065812e78a/t/5fc8522213f8d93bf200d481/1606963748040/world_apart_survivor.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_off0000dfe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFE2 5176 bytes
SHA-256: 74282061804af8d4c348201348abadd8dac061c4e4bb03fb715bb0fcb999bf8a
font_01_sfnt_off0000f15c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF15C 11548 bytes
SHA-256: 8d276683bac2e1ae69000b3fb7cd7f007308d56b9a91c2f164eaf234a1ac6127

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