Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d49f4f0550ff3e2…

MALICIOUS

PDF

72.1 KB Created: 2021-10-01 19:09:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 3be5ddc31abad24293b7975eb4922708 SHA-1: db350dfa692d8be01d683ec2e64c46285ea46e7c SHA-256: 0d49f4f0550ff3e2e26b87ad0f2bd022763b9ea70a5efa96d6d0674a779f189f
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of external URIs, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded JavaScript likely facilitates the redirection to malicious sites or the download of further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9849

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.
  • 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://irlanc.ru/uplcv?utm_term=3+ninjas+kick+back+full+movie+online+free+123movies PDF link annotation
    • https://pvcmikser.com/upload/files/wukugazekujopo.pdfIn PDF document text
    • http://bollnas.boj.se/uploads/userfiles/files/46280773319.pdfIn PDF document text
    • https://fereshtegan.net/basefile/fereshtegannet/files/gufusidarivex.pdfIn PDF document text
    • https://inwestorfinanse.pl/userfiles/file/nazerilalobilidefipiwi.pdfIn PDF document text
    • https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/16138fd70b459e---53730862622.pdfIn PDF document text
    • https://uleshuzatabc.hu/files/file/40365283749.pdfIn PDF document text
    • https://limblength-sldf.com/userfiles/file/jilupujufapodemugasod.pdfIn PDF document text
    • http://clairerolo.com/userfiles/file/natumikirusaxojigi.pdfIn PDF document text
    • http://akademia-jedenastka.pl/zdjecia/fck/file/73757715576.pdfIn PDF document text
    • http://noospc.ru/SITE/files/editor/file/lasejobinitano.pdfIn PDF document text
    • https://035620126.tw/upload/greenkitchen/files/rimijakopi.pdfIn PDF document text
    • https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c8ce1b647b---99636875871.pdfIn PDF document text
    • http://candleelectricals.com/uploaded_files/userfiles/files/mazojiro.pdfIn PDF document text
    • http://limoride.net/gallery/file/dixig.pdfIn PDF document text
    • http://technestudio.eu/userfiles/files/vedaguwigazurij.pdfIn PDF document text
    • http://savages.lu/imagesRTE/files/puvukotil.pdfIn PDF document text
    • http://zetrade.cz/userfiles/file/42898365719.pdfIn PDF document text
    • http://bestofbeer.ru/ckfinder/userfiles/files/muvoro.pdfIn PDF document text
    • https://chasehr.in/userfiles/file/72666904073.pdfIn PDF document text
    • https://rajatotogroup4.com/contents/files/goxesorewoxasawagadaruza.pdfIn PDF document text
    • http://factory-01.com/js/upload/files/sazipiwujuza.pdfIn PDF document text
    • http://digjamaica.com/app/webroot/files/62701406743.pdfIn PDF document text
    • http://roomyab.ir/basefile/roomyabir/files/zowunekupoxaxafusisepezi.pdfIn PDF document text
    • https://greenfuturevietnam.com/Upload/files/roxatipuwinitiwaku.pdfIn PDF document text
    • http://consade.com/userfiles/file/wedexilepuso.pdfIn PDF document text
    • https://twr1115.net/files/fckeditor/file/29272648176.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_off0000b3e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3E7 16492 bytes
SHA-256: f7e3ab845a5d35aa5faf983dc079341191deb5049af2adfb5688ba8664d95c19
font_01_sfnt_off0000de0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE0C 11172 bytes
SHA-256: 768ad090f742740786914326a983971dea8bbabfc154b7ad08e736df20762ead
font_02_sfnt_off0000f835.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF835 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1