Malicious PDF — malware analysis report

Static analysis result for SHA-256 d30ba562ffa4b46f…

MALICIOUS

PDF

72.6 KB Created: 2021-09-23 08:59:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: 538dbfeb00bf0923cd2f4be30612ceb6 SHA-1: 63ab4f4f700f688cffeba52f9a759614f17be663 SHA-256: d30ba562ffa4b46fb3b439e087c8eb50caf3e0d498c2365dfad9a9e83c3ad003
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links to external resources, many of which are hosted on compromised websites or disposable domains, suggesting a link farm or phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and heuristic firings point towards an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://daiichihr.com/uploads/news_file/jibesodaxin.pdf In PDF document text
    • https://marblobathware.ph/app/webroot/img/files/levijesanobodoxir.pdfIn PDF document text
    • http://floral-design-lindgens.de/userfiles/file/9090695790.pdfIn PDF document text
    • http://spamsmsgiare.com/media/ftp/file/83802383137.pdfIn PDF document text
    • https://mebelpozakazu.ru/wp-content/plugins/super-forms/uploads/php/files/7949669dc64e1ecb27a72d25c761d4b0/surutof.pdfIn PDF document text
    • http://homokkepek.hu/editor_up/38134843000.pdfIn PDF document text
    • https://iagclaims.endataclaims.com/ModCoreFilesUploaded/file/68735792586.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/99d5efdb299b510bad488fe41bbb7979/tidodula.pdfIn PDF document text
    • https://thefertilizerproductionline.com/d/files/buwazomakif.pdfIn PDF document text
    • http://fese.in/ienupdimages/images/files/4138484017.pdfIn PDF document text
    • https://phuketwebstudio.com/ckfinder/userfiles/files/3954559580.pdfIn PDF document text
    • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/a805c198f7e12d3dee90281b9dfd0e1a/ziduralolup.pdfIn PDF document text
    • https://aquaprosmart.com/userfiles/files/pidudegipewakinajaril.pdfIn PDF document text
    • http://ingatlantv.tv/userfiles/files/nugabekixojadalivugobawu.pdfIn PDF document text
    • https://goez1.com/10005001208290177/ckfinder/userfiles/files/94402775178.pdfIn PDF document text
    • http://reklamaopole.pl/userfiles/file/gevanupesa.pdfIn PDF document text
    • http://xycrusher.com/d/files/xupetofesakisuresokiwegi.pdfIn PDF document text
    • https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/f3bd64ccccd9b5299ff07a269c16795d/xodofezojas.pdfIn PDF document text
    • https://ecableapp.com/FCKeditor/FCKimgUpload/file/2881497461.pdfIn PDF document text
    • http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/1613785bc3b079---kowexaramomopob.pdfIn PDF document text
    • https://residenciasanamaro.es/userfiles/files/duzutematugofetafonikita.pdfIn PDF document text
    • https://nullemont.fr/nullemont/ckfinder/userfiles/files/4649368993.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=fluffy+fall+mod+apk+unlimited+moneyPDF 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_off0000b241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB241 18708 bytes
SHA-256: 7cb38eac2cfb2ca77abf55fd25c39fd86f1fdb1cf275d1325ab5308ed44ff594
font_01_sfnt_off0000e35d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE35D 10672 bytes
SHA-256: 92138a088e1c47a9e848708f279ef6537af824029dd581b720d979c440907f0d
font_02_sfnt_off0000fbd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBD0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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