Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd02902db0af0a2a…

MALICIOUS

PDF

81.1 KB Created: 2021-09-19 08:14:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 53ad9807f61f84aaa6ff4e4057b48a4d SHA-1: a61eb45e6f5c276976a1d0048439ac44f13d1960 SHA-256: bd02902db0af0a2a39199c0bb11b14ababf88cf1c073515b07d2bbfbf2988e96
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised CMS uploads or disposable hosting, suggesting it's designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to deliver a second-stage payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

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
  • 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.
  • 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://laboratoriologos.it/userfiles/files/jilelarozosebapagatonigi.pdf In PDF document text
    • https://emenu.hu/editor_up/55193664631.pdfIn PDF document text
    • http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e014d8a383---misajuvemiku.pdfIn PDF document text
    • http://criminisiepartners.it/userfiles/files/metogofebezodumul.pdfIn PDF document text
    • http://baracenter.be/userfiles/file/79733537623.pdfIn PDF document text
    • https://brs.jo/userfiles/files/vifupatoxeranilomuxiji.pdfIn PDF document text
    • http://lutechmed.com/Images_upload/files/jodelawifujalixox.pdfIn PDF document text
    • http://www.peritaonline.es/ckfinder/userfiles/files/ginov.pdfIn PDF document text
    • http://e-district.org/userfiles/file/23827853811.pdfIn PDF document text
    • https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/e2dieq0lvbq1f8efa4sk9p6beq/13664354008.pdfIn PDF document text
    • http://3xlove.com/uploadfile/file/bijami.pdfIn PDF document text
    • http://clairvoyantinfotech.com/demo/images/jotadivukinavixopufaxono.pdfIn PDF document text
    • http://dorapeyzaj.com/userfiles/file/vegedonibafoti.pdfIn PDF document text
    • http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16136ae287b5cd---18299008918.pdfIn PDF document text
    • http://ozdoby-betonowe21.pl/Upload/file/61298931365.pdfIn PDF document text
    • https://codecs.ro/images/file/rojufiromi.pdfIn PDF document text
    • http://rootbeadmill.com/upload_fck/file/2021-9-12/20210912074638578842.pdfIn PDF document text
    • http://jongauger.com/ckfinder/userfiles/files/89211191.pdfIn PDF document text
    • https://oazapiekna.com/zdjecia/fck/file/27599930241.pdfIn PDF document text
    • http://dentherapia.hu/files/file/timibuluvunosara.pdfIn PDF document text
    • http://4els.ru/uploads/images/files/femibidoxorewipa.pdfIn PDF document text
    • http://remont-elektro.eu/archiv/file/10947856797.pdfIn PDF document text
    • https://thietbigas.net/media/files/1864939467.pdfIn PDF document text
    • http://vakantie-noordlimburg.nl/ckfinder/userfiles/files/futinawo.pdfIn PDF document text
    • https://a-guskov.ru/uploads/files/nadaximolorepozazigizugi.pdfIn PDF document text
    • http://dealershop.es/camarasegovia/userfiles/file/jokipoxoz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=dr+driving+download+linkPDF 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_off0000db6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB6D 17028 bytes
SHA-256: 3fcd728580f8ec649b4ca39852123e23d6ed644471366aebb0e1c5ae37dd431b
font_01_sfnt_off000107c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107C3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011fda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FDA 10272 bytes
SHA-256: caf0138c97668ece359c717177670b07ff23e043af181295d1e1206eb2db8c88

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