Malicious PDF — malware analysis report

Static analysis result for SHA-256 8eededeca3805471…

MALICIOUS

PDF

84.6 KB Created: 2021-07-24 12:42:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 3324ca5ea8a2901945074cef66d9e56a SHA-1: 19f28ec2f4a077e567f67e531ec10122f70371d8 SHA-256: 8eededeca3805471fdd6356a4fd42d9eed6071a901ad1cea4061aaef694eb102
124 Risk Score

Malware Insights

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

The PDF file contains a link farm pointing to multiple domains, many of which are hosted on compromised WordPress sites or disposable hosting. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a malicious intent to phish or distribute further malware. The embedded URLs are designed to redirect users to these potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3253

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
  • 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
  • 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://suativisamsungtaihanoi.net/upload/files/wivoxud.pdf In PDF document text
    • https://pypconsultores.mx/userfiles/file/16026032590.pdfIn PDF document text
    • https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/ecebe263017dd9339e6b7e015851340e/lovubejuvipaw.pdfIn PDF document text
    • https://chokysitohang.com/Uploads/userfiles/files/92744747980.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e397e92842b---3489138857.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609af2701f4ba---dateditiminenefuw.pdfIn PDF document text
    • https://maturana.cl/upload/file/91727060214.pdfIn PDF document text
    • http://posekatzahradu.cz/files/file/80461558087.pdfIn PDF document text
    • https://metal-et-verre.ch/ckfinder/userfiles/files/kuzafibomitelose.pdfIn PDF document text
    • http://clubsahdianagalati.ro/upload/editor/file/wevurejinodadijefoz.pdfIn PDF document text
    • https://tucsonhomewindowtint.com/wp-content/plugins/super-forms/uploads/php/files/466288613889a350d37abec50f3272e7/nuloruwaxekubepibufap.pdfIn PDF document text
    • https://tortugafilms.ca/adminfiles/file/wupipuxabibago.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/16076b21a3b850---18245408096.pdfIn PDF document text
    • http://ambvetfanini.eu/userfiles/files/fitorexokekok.pdfIn PDF document text
    • http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/08b8981f3fa3327adb6b563533785fcb/65386688934.pdfIn PDF document text
    • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/db916363e5256de024d9ff028d6c93f8/witugatuxekeg.pdfIn PDF document text
    • https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/a78d94ed857908d7631a2974d87e8b41/gejerevupodijakig.pdfIn PDF document text
    • http://kashima.cc/userfiles/file/70973217375.pdfIn PDF document text
    • http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/16071f455ca4cf---21202420824.pdfIn PDF document text
    • https://parokisantolukas.org/Uploads/userfiles/files/21880523482.pdfIn PDF document text
    • http://www.dr.schure.net/ckfinder/userfiles/files/87233836943.pdfIn PDF document text
    • http://www.mkkdigital.pt/wp-content/plugins/formcraft/file-upload/server/content/files/16086e62ba3722---gowovivi.pdfIn PDF document text
    • https://alienaquatics.com/home/gb/public_html/ckfinder/userfiles/files/godidigiwurap.pdfIn PDF document text
    • http://www.medical-psychology.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1606fba774ab94---pagixojonifagulubemabi.pdfIn PDF document text
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca45bb5665---rejerolelukopiwitixulati.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=how+do+i+setup+my+fitbit+charge+hrPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fadb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFADB 16860 bytes
SHA-256: 8b011652017695bb0a90decf0c7e2a39f289618ab8c5134f9a2a4903500a3bec
font_01_sfnt_off0001270d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1270D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1