Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d0e9dbfdc4bf578…

MALICIOUS

PDF

70.2 KB Created: 2020-12-16 08:11:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0dda39fd5f45722aa9993ec0deedcb0c SHA-1: d913d8e819645bee401e5e18e23663f73b1a5a4a SHA-256: 2d0e9dbfdc4bf578075be3cb7a1adbf7be043d2f94e55c1d223b00f6695886f0
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://trafftec.ru/strik?utm_term=ninja+cat+unblocked+games+333 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4463306/normal_5fbd5995637c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420911/normal_5fa84e935dfab.pdfIn PDF document text
    • https://jinobodusere.weebly.com/uploads/1/3/4/7/134722577/b50f99a5198de.pdfIn PDF document text
    • https://jimamejovegevag.weebly.com/uploads/1/3/4/5/134593921/0e6485.pdfIn PDF document text
    • https://zimipiboneletun.weebly.com/uploads/1/3/4/8/134894964/896098.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426955/normal_5fb869fca1b60.pdfIn PDF document text
    • https://sojomirolasa.weebly.com/uploads/1/3/4/3/134325131/477039.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371523/normal_5fbdef0c6f7a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392209/normal_5fa548b7e084e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388814/normal_5fa1a24b0ca34.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://static1.squarespace.com/static/5fc573d3bf71053ccb2e5777/t/5fd15702880fa23343c43c9f/1607554818685/mefotajoparidejijofeso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ed5e3ba-385b-4596-b02c-6e687400e8db/74784424055.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72474c47-2158-4cb4-af81-9f1799e88c99/caracteristicas_de_un_servidor_de_correo_electronico.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc66d97df132613bbe366a6/t/5fcdbbe524c49707d33e6865/1607318503083/box_office_kitchen_greensboro_nc.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5b28ea87939686428f431/t/5fcec1c81a78ee5f0151fe63/1607385545232/hong_kong_style_mahjong_rules.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_off0000c89b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC89B 5460 bytes
SHA-256: c0202c0b2689fc2e399dbf3e3d890b855e647ce643b616e17239860e6aba445d
font_01_sfnt_off0000db1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB1B 10096 bytes
SHA-256: c6107512d308972b5340b17677e4f82ea60de2dc10f20858e0210aabd1ec76ae
font_02_sfnt_off0000fd74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD74 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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