Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9b693bcdebc7abf…

MALICIOUS

PDF

68.4 KB Created: 2021-02-08 18:32:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: dffad66726ef5f5a225ca3122510f361 SHA-1: 35a6612d3ab679c6f7f198d0396f5d16345ca064 SHA-256: d9b693bcdebc7abff0208981b88dc0fa3c290105b6b3472b4f11a0282099b9dd
156 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 a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://baarspo.ru/aws?utm_term=catholic+online+guide+to+confession PDF link annotation
    • https://poxagubojawi.weebly.com/uploads/1/3/1/4/131482812/6ca445ff7f0d.pdfIn PDF document text
    • https://zafasasuk.weebly.com/uploads/1/3/4/7/134713251/baxuluzajezej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475989/normal_5fd1f89a64305.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486061/normal_60208433f2f97.pdfIn PDF document text
    • https://jodisugej.weebly.com/uploads/1/3/4/7/134732418/7d058895342f0.pdfIn PDF document text
    • https://dilipifoson.weebly.com/uploads/1/3/1/0/131070096/jozikidazodugi.pdfIn PDF document text
    • http://memilarud.22web.org/vudusokoletepumosazud.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460055/normal_5fe3e851ef1b4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sexikiti.epizy.com/zeselo.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/refebezafawen.pdfIn PDF document text
    • http://kekokid.epizy.com/kuzigakuwemokodezomagi.pdfIn PDF document text
    • http://darajakejaxise.rf.gd/mawegulesowepuvupe.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/ghost_house_2017_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vavejijitatofu/sobazuxopulawubakisikilir.pdfIn PDF document text
    • https://s3.amazonaws.com/jebupofedijakuk/nice_guidelines_menopause.pdfIn PDF document text
    • https://s3.amazonaws.com/lukepepe/33229059938.pdfIn PDF document text
    • https://s3.amazonaws.com/goviwigax/9948528271.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_off0000d086.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD086 5092 bytes
SHA-256: 9498f721c3577f8d7b2e4e53bcde1734627047ab835d286b8bc52b748929d1bf
font_01_sfnt_off0000e1d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1D6 10152 bytes
SHA-256: b1468ad9a2a96c0bc7f5e188231c9e597ae6af4ade384fa8e9dbd841dd175b2a

Open this report in the interactive analyzer, or submit your own file for analysis.