Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebaa67718e979380…

MALICIOUS

PDF

87.4 KB Created: 2021-09-05 21:08:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 41bd769c7e9ecb4ad01497921afe2029 SHA-1: f291b797b6ec1b654a251b9d19974b7e24d8c714 SHA-256: ebaa67718e9793808e36fd9805e5a979fe2ff1212f114e8ebd9ff3a3e18aaee9
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It functions as a link farm, containing numerous URLs pointing to potentially compromised or disposable hosting sites, likely intended to lure users to phishing or malware distribution pages. The presence of multiple external URIs and link farms on disposable hosting indicates a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://yishiweb.com/upfiles/files/20210823_202117.pdf In PDF document text
    • http://aprendanow.com/wp-content/plugins/super-forms/uploads/php/files/e67fdb074dcf9c503c515d28e7a2292e/24367191951.pdfIn PDF document text
    • http://tetraeng.it/userfiles/files/rawinebatukokepe.pdfIn PDF document text
    • http://atya.eu/files/file/94812885355.pdfIn PDF document text
    • https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/6fc41947a5b58c67256459c80e91d36b/dasebilupuluberow.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/18865317456.pdfIn PDF document text
    • http://ahdjcm.com/upload/files/vepotebexugolusovumawizi.pdfIn PDF document text
    • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160801edb4c1b6---xegejuwupamez.pdfIn PDF document text
    • https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/bbbeb281f64b42a83493342f12805560/xopifesesejuxugexugimig.pdfIn PDF document text
    • https://actor-conseil.com/files/file/winifuxa.pdfIn PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/160a3c3ff1a583---puxutekifavojoxineki.pdfIn PDF document text
    • https://rzfmuhasebe.com/userfiles/file/88042239470.pdfIn PDF document text
    • http://paillasse.hu/userfiles/file/dijosunuvopezibi.pdfIn PDF document text
    • http://sity-luxe.ru/userfiles/file/35296170124.pdfIn PDF document text
    • https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1609c4f1bd92e9---telapetekidotunana.pdfIn PDF document text
    • http://mebell-city.ru/ckfinder/userfiles/files/14203101353.pdfIn PDF document text
    • http://apnschool.in/singhania/downloads/file/mibavenetiduwa.pdfIn PDF document text
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/1607c6e0fb62a7---zapaxumodexonivibupatotax.pdfIn PDF document text
    • http://sacoorhealth.pt/site/upload/file/76274124954.pdfIn PDF document text
    • https://airbays.com/userfiles/file/85067640926.pdfIn PDF document text
    • http://emrc.ie/upload/imagecontent/file/85410769171.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/160a78e694749a---51523516878.pdfIn PDF document text
    • https://www.aceitedeoliva.com/wp-content/plugins/super-forms/uploads/php/files/fddb939f0fbf27cc7e27649b8b8cb242/96209301173.pdfIn PDF document text
    • https://betenrealestate.com/sites/default/files/file/diwopamebivoz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=sampling+distribution+in+statistics+pdfPDF 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_off0000f030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF030 17640 bytes
SHA-256: d9af743c01c9d97c26f4c427f4cc00623951a1965e3e6a63043754a179572cff
font_01_sfnt_off00011e62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E62 11144 bytes
SHA-256: cdd704afb6198150ff36c173bf3e4e4bc638ce5beea35c8fcc8ce0da3e8abfb5
font_02_sfnt_off000137eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137EB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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