Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9b401894e35a00e…

MALICIOUS

PDF

68.7 KB Created: 2021-09-11 10:55:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 0664e348dc2d7677c86cf6165bdf6a83 SHA-1: 46ba214d2181ca8b3106b91951002ab4a48a6474 SHA-256: e9b401894e35a00e8e479b1e12b4bb3230f51ba68e4158937fe704759bda081f
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which are hosted on compromised or disposable domains, indicating a malicious intent to redirect users. The ML classifier and ClamAV detection strongly suggest this PDF is malicious, likely a phishing or malware distribution lure. The presence of embedded JavaScript (T1059.007) further supports its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://huntic.ru/uplcv?utm_term=codes+for+fortnite+2021 PDF link annotation
    • http://barrybusiness-crm.com/ressource/devis-photo/files/36119172202.pdfIn PDF document text
    • http://permanentnimakeup-brno.cz/userfiles/files/wagudavet.pdfIn PDF document text
    • https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613800245441a---pewit.pdfIn PDF document text
    • https://tssch.in/tssch/application/admin/uploads/file/lesuguwovozujuno.pdfIn PDF document text
    • https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a033d9d42e---befaret.pdfIn PDF document text
    • https://ataru.site/js/ckfinder/userfiles/files/tinotekebovepovukudujun.pdfIn PDF document text
    • https://agrando.cz/files/file/82770902680.pdfIn PDF document text
    • http://artin-intranet.com/ckupload/files/regevoguzubunasad.pdfIn PDF document text
    • https://goodluckfishing.com/ckfinder/userfiles/files/tojuxebuzolik.pdfIn PDF document text
    • https://www.bankkartya.hu/js/ckfinder/userfiles/files/xudogojeleb.pdfIn PDF document text
    • https://fontan-montag.ru/img/upload/85063371513.pdfIn PDF document text
    • https://cursosadistanciayonline.com/medios/files/fugurepixexodamuzez.pdfIn PDF document text
    • http://eastcity.hu/ufiles/file/30056153923.pdfIn PDF document text
    • http://silver1979.com/upload/file/lobigedow.pdfIn PDF document text
    • http://aumnat2car.com/ckfinder/core/connector/php/upload/files/sikulugisigolinokefu.pdfIn PDF document text
    • https://maryamghiasi.com/images/upload/files/jozutebabogimapa.pdfIn PDF document text
    • http://nhatminhtrading.vn/app/webroot/uploads/files/13142158282.pdfIn PDF document text
    • http://kunbot.com/upload/files/4129590565.pdfIn PDF document text
    • http://viquadro.com/userfiles/files/20816314845.pdfIn PDF document text
    • http://k-yoga.org/file_upload/spaw_upload/file/20210904005957.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613bea6a13716---20560221194.pdfIn PDF document text
    • http://phubozena.pl/userfiles/file/44395950836.pdfIn PDF document text
    • http://hglobaltour.com/FileData/ckfinder/files/20210910_7F48A9D10FBFFDBD.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://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_off0000b18b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB18B 10464 bytes
SHA-256: de48349983a95a7d7293b5900c65606a673f782e378b43c8e5026fa3002b1ded
font_01_sfnt_off0000c97f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC97F 14460 bytes
SHA-256: 20d024560e3893bd4ed0f65ea277ecb31cb5f533ccdd3c29ba82e624df2c10cc
font_02_sfnt_off0000ed6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED6F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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