Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c070e9241a845f6…

MALICIOUS

PDF

83.7 KB Created: 2021-03-11 10:19:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 255b906bc10b757bb5e2ce1dde29159f SHA-1: 2696e04398adfe0f5a7e4d936fc1d660622db024 SHA-256: 5c070e9241a845f67e4f6c58f571fe11f122e0873960cf3773cc3bd6fe121147
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is classified as malicious, exhibiting characteristics of a phishing lure. It contains numerous external URIs, many hosted on disposable domains, suggesting an attempt to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://nipisod.ru/123?utm_term=client+design+brief+template PDF link annotation
    • https://paxogusav.weebly.com/uploads/1/3/4/0/134040839/312af8bd6121.pdfIn PDF document text
    • http://znatural.space/dark_souls_2_ps4tmaxg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455197/normal_5fee5492a07fd.pdfIn PDF document text
    • http://megalit-korolev.ru/701841899739pew4.pdfIn PDF document text
    • https://ripukalogud.weebly.com/uploads/1/3/4/3/134391837/8060539.pdfIn PDF document text
    • http://goodxday.xyz/lonesezipipejugewarasebcraz.pdfIn PDF document text
    • https://fexalikinuzumow.weebly.com/uploads/1/3/5/3/135324316/452564cefc6.pdfIn PDF document text
    • http://geosen.net/diagrama_de_fases_del_co2lfr2b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391000/normal_602c547b45a6e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vawomebez.rf.gd/67484655086.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06f182e1-c1f0-4bb8-a644-df074f8ae932/74873318373.pdfIn PDF document text
    • http://tubujozuvos.epizy.com/rasodelafuzo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/329c57a2-ef1f-47c4-99b3-1028794f17ed/mizazelirojubo.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/in-_house_creative_services_industry_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ea3b7bf-0665-4bb7-9382-54705b3fde2d/13675877474.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0b5d7a6-7743-4f71-9ab2-ce5c8c689d3b/ridgid_shop_vac_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/durability_of_concrete_in_seawater.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/91612699786.pdfIn PDF document text
    • http://juranakowi.rf.gd/17158813978.pdfIn PDF document text
    • https://s3.amazonaws.com/fadobirak/converting_file_to_excel_spreadsheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b57eeb2-f863-430e-b9e1-bf8a9d5748d2/tikuporepikitonise.pdfIn PDF document text
    • https://s3.amazonaws.com/bejikefowu/benuminenutu.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_off00010b19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B19 5404 bytes
SHA-256: 433c5a2e14be064b49e0f06e62204de63691952c75d9e29c6f81dc3e5551ccf4
font_01_sfnt_off00011d55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D55 10476 bytes
SHA-256: 56d80310b1a2053db5ad2d229b04c8410774f71885084689b376ea2d55a578a5

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