Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e47fed8395ccda0…

MALICIOUS

PDF

80.3 KB Created: 2021-09-16 20:20:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 0853b5e56159839f547de187194976b1 SHA-1: 5011c2713f233b4b74efe81390372eebb61d2843 SHA-256: 0e47fed8395ccda0694307ab460c1c2e11505cce30d485f87c58fe6b33add66e
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous external links, many pointing to PDF files hosted on potentially disposable domains, suggesting a link farm or redirection mechanism. The presence of a 'download button' heuristic further supports a lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://eyescare.vn/app/webroot/upload/ckfinder/files/xujulizulubuxulif.pdf In PDF document text
    • http://jin16888.com/userfiles/file/lozilusovovus.pdfIn PDF document text
    • http://chothuexehochiminh.com/userfiles/file/ralixeritexaxalem.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/16132ab7e461c8---36258184490.pdfIn PDF document text
    • http://hp-cnc.de/uploads/files/96953437579.pdfIn PDF document text
    • http://normel.org/files/upload/file/23267439151.pdfIn PDF document text
    • http://ziguratex.com/helpdesk/app/webroot/img/userfiles/files/janisisevutozetidekaseli.pdfIn PDF document text
    • http://ergakiland.ru/files/files/66589273123.pdfIn PDF document text
    • http://xn--eyt274i.com/upload/files/juxawovefawesowu.pdfIn PDF document text
    • https://toptenstudy.com/upload/files/BodyFile__61360F21697C8.pdfIn PDF document text
    • http://1qjd.com/upload/files/2021-09-14-13-03-33-BhrIrIeq.pdfIn PDF document text
    • http://sushimura1.com/uploads/files/gebupagorogere.pdfIn PDF document text
    • https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/35b45956b2db6529962638e9f026e5ef/wemumewebesepotexo.pdfIn PDF document text
    • https://jin-hung.com/userfiles/file/bixazitusi.pdfIn PDF document text
    • http://ranchobg.com/img/file/49820400803.pdfIn PDF document text
    • https://aimhc.com/userfiles/file/zubezedugap.pdfIn PDF document text
    • http://zjleiou.com/images/upload/File/lebebajogorerex.pdfIn PDF document text
    • http://xn--k1akb4c.xn--p1ai/userfiles/file/goniluxiwelubagijipoba.pdfIn PDF document text
    • http://ck-buhgalter.ru/userfiles/file/16764680668.pdfIn PDF document text
    • http://cuacuongiare.vn/upload/files/21641777139.pdfIn PDF document text
    • https://okna-kursk.ru/page_edit/_samples/userfiles/files/77812660105.pdfIn PDF document text
    • https://www.educazionesessuale-scuola.ch/ck/ckfinder/userfiles/files/59824444190.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=english+grammar+in+use+apk+crackedPDF 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_off0000d3b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3B1 10920 bytes
SHA-256: 952a6c90ea3912e2610565af5efd767a7f7ab35376edf80c63b48ac72c5d5ccf
font_01_sfnt_off0000ec7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC7E 17984 bytes
SHA-256: cfa8af5610371ae19f2a1d3f5791570e23ae3f77057a59de839e382998c5743a
font_02_sfnt_off00011b65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B65 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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