Malicious PDF — malware analysis report

Static analysis result for SHA-256 5848daa5e1ffdba2…

MALICIOUS

PDF

74.1 KB Created: 2021-09-13 00:57:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 030347766fde2f01e98baf4005e43a0d SHA-1: b56986e135cc46663b8b8ea0b0d26175b43c4762 SHA-256: 5848daa5e1ffdba2feba1313947815dce29b7ae22f2b324c377e09083312c0d5
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The sample was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The PDF contains a large number of embedded links, many pointing to unknown domains, which is characteristic of phishing or malware distribution campaigns. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this by indicating a link farm on disposable hosting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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 https://spirit-legend-enterprises.com/webroot/editor-uploads/files/29175567311.pdf In PDF document text
    • https://loyallcanada.net/editor_files/file/56326373923.pdfIn PDF document text
    • http://hoteldazegliotorino.com/userfiles/files/xagewevoxedatekisudofuf.pdfIn PDF document text
    • https://stancijanegrin.com/UserFiles/files/banemisabe.pdfIn PDF document text
    • https://dsverano.com/UserFiles/File/89761282058.pdfIn PDF document text
    • http://okuninka-biale.pl/userfiles/file/22922182374.pdfIn PDF document text
    • http://carmakers.cz/userfiles/files/30469321097.pdfIn PDF document text
    • http://geometrarontani.it/userfiles/files/rujobiketomuxiteb.pdfIn PDF document text
    • http://polaryachtmanufactory.com/res/wysiwyg/file/56496953657.pdfIn PDF document text
    • http://sinosteelcode.com/filespath/files/20210901052238.pdfIn PDF document text
    • http://gurukripapublicschool.com/userfiles/file/39846310312.pdfIn PDF document text
    • http://avanti-kuhni.ru/upload/files/73198888377.pdfIn PDF document text
    • http://partner-support.net/user_data/userfiles/files/finowofirorajodanipo.pdfIn PDF document text
    • http://hamkr.com/userData/board/file/vewosebidizonijabosugabu.pdfIn PDF document text
    • https://ateliersmq.com/pevron/www/img/file/vogasixenudujivi.pdfIn PDF document text
    • http://divodizain.ru/ckfinder/userfiles/files/98035532689.pdfIn PDF document text
    • http://architettorobertafasola.eu/userfiles/files/tulelarap.pdfIn PDF document text
    • http://abwingstop.com/uploads/files/56457412286.pdfIn PDF document text
    • http://zamel2.pl/userfiles/file/6284521463.pdfIn PDF document text
    • http://ecohost.ru/pics/images/file/revaruke.pdfIn PDF document text
    • http://maradonasalud.com.ar/ckeditor/ckfinder/userfiles/files/gefozo.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161347e57021f0---zenetivimanalumujivesitu.pdfIn PDF document text
    • http://travelspace.pl/userfiles/file/vujagotiximujenavodu.pdfIn PDF document text
    • http://traiteur-ribot.fr/userfiles/file/filerugowomiridegemetemu.pdfIn PDF document text
    • https://mp2020.csysadmin.com/ckfinder/userfiles/files/kuragodatirifuzed.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=how+to+mirror+phone+to+mi+tvPDF 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_off0000c1d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1D8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d9ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9EA 16528 bytes
SHA-256: ec0eca56fb12d6a9408f1d64215e0dfb6ba85d2749b7a4599b92c9dacd335c19
font_02_sfnt_off000103f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103F1 10284 bytes
SHA-256: 3acc6a0af0c78e24314b955c429c42423be685921e66634cf22440beeccbbfdf

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