Malicious PDF — malware analysis report

Static analysis result for SHA-256 d024c63d61611de1…

MALICIOUS

PDF

99.3 KB Created: 2021-09-14 09:25:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: faa8678cb1efcae49eeff61d811917b2 SHA-1: cb9d77badaa04870d9728dc7e280ceac6d3f7522 SHA-256: d024c63d61611de158ddf95cc45d112fc974c6da328915a0fb19d74d8c3652d5
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document is designed to host numerous links on disposable domains, suggesting a phishing or malware distribution scheme. While no scripts were explicitly extracted, the PDF format itself can embed JavaScript, which is often used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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 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.
  • 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 http://devison-matras.com/upload/file/movafikad.pdf In PDF document text
    • https://www.gurkhasfinance.com.np/ckfinder/userfiles/files/foxujavuxen.pdfIn PDF document text
    • http://okna-kursk.ru/page_edit/_samples/userfiles/files/kesikopuzodaj.pdfIn PDF document text
    • http://jljemc.com/upload/files/9322189562.pdfIn PDF document text
    • https://jordan.si/dokumenti/file/20307201522.pdfIn PDF document text
    • http://refah4ter.info/basefile/hotelrefah4terir/files/88346947718.pdfIn PDF document text
    • https://gikguamerica.com/userfiles/file/satovajuxalunepexofej.pdfIn PDF document text
    • https://krusomying.com/data/file/rejixinebebuxufo.pdfIn PDF document text
    • http://synphabase.ch/upload/file/29186732618.pdfIn PDF document text
    • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/f1d0bd598a432ec20713ab5bf389954b/38325641722.pdfIn PDF document text
    • https://baust.edu.bd/app/webroot/ckfinder/userfiles/files/88464021087.pdfIn PDF document text
    • http://ristoranteibucanieri.it/userfiles/files/52555699523.pdfIn PDF document text
    • http://schokoladenfontaene.de/idata/nokikanijugidagot.pdfIn PDF document text
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/1612ea6956cead---kukelevuragazalanul.pdfIn PDF document text
    • http://transporteslaplata.com/imagenes_web/file/vojogafupirakewapuwe.pdfIn PDF document text
    • http://autosoftware.company/autoresponders_images/files/36439394167.pdfIn PDF document text
    • https://aradovan.com/userfiles/file/widubuzirugomatem.pdfIn PDF document text
    • http://cybernet.asia/UserFiles/File/gerir.pdfIn PDF document text
    • http://canshu.dlzj.net/upload/files/20210911015828693481.pdfIn PDF document text
    • http://lejonhund.com/upload/dojikekanukigobogatij.pdfIn PDF document text
    • https://www.hsbofmn.com/ckfinder/userfiles/files/levinakulozivad.pdfIn PDF document text
    • http://rheumatology.institute/upload/content/file/wuwulazafiwonamu.pdfIn PDF document text
    • http://urduhadith.org/survey/userfiles/files/69649938098.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=how+do+emulators+work+on+androidPDF link annotation
    • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011f6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F6C 18044 bytes
SHA-256: b175605fe3bdd53c6639bacea8be1f3fed28db4aeeb01f1d09bb22f87a3bc848
font_01_sfnt_off00014ec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14EC2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000166d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x166D9 10676 bytes
SHA-256: 84d69edc1bb4f1ddb4f92523349ab3ff552acc87aea09d0dfc608f28d68c8c84

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