Malicious PDF — malware analysis report

Static analysis result for SHA-256 0919133214ce6856…

MALICIOUS

PDF

83.3 KB Created: 2021-08-04 20:42:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 2f88430f6fe71ab85169a417c0b33cae SHA-1: 01e2a4f7e39f4a1b483b99c20092995c12750117 SHA-256: 0919133214ce68567e1d28ddb5c56b1cad0935b2b9416f112378a5b1fcc90e0a
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for Pdf.Phishing.Trojan. The embedded URLs and link farm structure indicate a phishing attempt, likely to trick users into downloading further malware. The presence of multiple links hosted on compromised CMS upload directories reinforces this conclusion.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609a71e0a5cd7---wuxevipogu.pdf In PDF document text
    • http://shethof.ch/cgi-bin/dynamisch/file/70000149964.pdfIn PDF document text
    • http://ducthoaudio.com/upload/files/votaju.pdfIn PDF document text
    • https://masterpieces-mallorca.com/wp-content/plugins/super-forms/uploads/php/files/7292d152ee984c70ada1f30e730e0241/80555408760.pdfIn PDF document text
    • http://funperm.ru/content/file/tamatovalusa.pdfIn PDF document text
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a139eda631---87302069882.pdfIn PDF document text
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a53d7bd154f---98696707764.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b11ea8acac5---12951488102.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080f2c4048ba---87111280250.pdfIn PDF document text
    • https://amatnieks.com/pictures/image/lowiri.pdfIn PDF document text
    • https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc6200b7a45---zaguluz.pdfIn PDF document text
    • http://austria-ex.com/images/blog//file/12776568698.pdfIn PDF document text
    • http://pileshoppen.dk/userfiles/file/lemivefamowudufibafu.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608794b41cb40---78915440827.pdfIn PDF document text
    • http://bmhs1963.com/clients/7/72/7286fd37811b7a5dece6e69924e4d5ab/File/lazijorowodelin.pdfIn PDF document text
    • https://jesssmithtri.com/jesssmith/ckfinder/userfiles/files/tifemorisitujubazes.pdfIn PDF document text
    • http://bacsionline.net/userfiles/file/61694058935.pdfIn PDF document text
    • https://medsplus.us/admin/images/file/muraziwifaribadi.pdfIn PDF document text
    • https://hssipm.com/wp-content/plugins/super-forms/uploads/php/files/1eabab99ea3acdfbac0ca8201c721df9/retobujegeleniturimugota.pdfIn PDF document text
    • http://efuegypt.org/userfiles/file/25409751590.pdfIn PDF document text
    • http://cuacuonnhanh.vn/Images_upload/files/82517624788.pdfIn PDF document text
    • http://grandp.ru/userfiles/file/duwupapaseg.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=avast+vpn+cracked+apkPDF 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_off0000e349.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE349 10388 bytes
SHA-256: f295fb9943f3c6600c996d01d6a9e9c8a298a4b55e303be46e35b493f96027e3
font_01_sfnt_off0000fb05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB05 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011317.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11317 17168 bytes
SHA-256: 10cfe2bc9335b25d5874f5f34244d9eb02622a308cdf5233257f396cb17dd50d

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