Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad5eaf6520e093bd…

MALICIOUS

PDF

70.8 KB Created: 2021-04-02 22:20:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 32c939456faa8077fc05240b5ee3e803 SHA-1: 53d3f131b3f93f5c4d75721e0f4c038a0bd6edf3 SHA-256: ad5eaf6520e093bd0492970d63609e6adf54a6f4c299cbbe85d37bec1f18cdcb
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://zajinet.ru/strik?utm_term=sig+sauer+legion+p229+rxp+for+sale PDF link annotation
    • http://zagavexakagin.mypressonline.com/zisizupexo.pdfIn PDF document text
    • http://wumiwuzigimo.mywebcommunity.org/harga_g_shock_ga_100_cb.pdfIn PDF document text
    • http://lilubaxubaxulu.sportsontheweb.net/88995419317.pdfIn PDF document text
    • http://bisibometixo.mywebcommunity.org/40584765201.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vovuzize/63411038284.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/platicas_de_seguridad_en_mina.pdfIn PDF document text
    • https://e46eb8ae-11b5-47af-91b5-79e2db369635.filesusr.com/ugd/f84671_099e32ff8c23468787516bd9d073cfcc.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4517397e-f64e-4554-8f1a-6d95803c7279/jagapuwadosuze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6099c49-7686-4110-8812-ec8058b386ba/ejemplo_de_diagrama_de_flujo_con_algoritmo.pdfIn PDF document text
    • http://wegorabeg.atwebpages.com/17130644732.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/daselebozefuronimevutanu.pdfIn PDF document text
    • http://domuromu.atwebpages.com/best_way_to_critique_a_play_fortnite.pdfIn PDF document text
    • https://72cdfa97-b5fe-44cc-9aa9-3142b5aa642a.filesusr.com/ugd/ee32c9_026885160e8144cd96b4b97a3154f4b6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/89174580458.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/eeo_annual_reporting_form.pdfIn PDF document text
    • http://lobopekogolo.onlinewebshop.net/different_parts_of_ic_engine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b1d07ef-4cb9-42ee-a678-2be218a63fbb/blue_bossa_guitar_tab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e73406aa-8e43-4c4c-9c2e-187bd50ef57e/kefemukivarigadizaxi.pdfIn PDF document text
    • https://878ee1be-828d-48b9-a24a-84283cf66a1c.filesusr.com/ugd/86936c_eb520b70ed574658b4b16bfbb1dec077.pdf?index=trueIn 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_off0000d503.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD503 5528 bytes
SHA-256: 98aa991055f0ce4e1a76c19d78cfd288881fa32d6eb6a3794b44d527616e8471
font_01_sfnt_off0000e7e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E5 10632 bytes
SHA-256: d669881bc5dd659706522d8bdd3ee0fd7d7fd0ce377d12c71fcaa7774cd3c39a

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