Malicious PDF — malware analysis report

Static analysis result for SHA-256 94bc782f1d3a0006…

MALICIOUS

PDF

95.9 KB Created: 2021-08-09 17:56:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: ce5ea86e45251eff20a4b4942987cbfe SHA-1: f9c38a2edc9dbf6868866abc3276e5af83840d76 SHA-256: 94bc782f1d3a00065963f9e47f81dfb548af450ad47a54e3f1b75b371a987929
156 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating it functions as a link farm. The embedded URLs point to various websites, many hosted on compromised CMS platforms or disposable domains, suggesting an intent to lure users to malicious sites for phishing or malware delivery. No scripts were extracted, and the document body was unreadable, but the link farm nature and compromised hosting are strong indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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 https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/82840e5c1f811b360522f08a770f631a/54815840370.pdf In PDF document text
    • http://daotaoyduoc.org/wp-content/plugins/super-forms/uploads/php/files/gm2q5muenfua0av1d0kbt8d2od/fawotevubagi.pdfIn PDF document text
    • http://leinerpakgelatine.com/survey/userfiles/files/raxakakub.pdfIn PDF document text
    • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/161106dc5cd5bc---68216491164.pdfIn PDF document text
    • https://rmp-familienanzeigen.de/cms/files/jesudapebiwekalonaxobig.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb93b636eae---2063564156.pdfIn PDF document text
    • https://faceless.me/userfiles/files/vavogogenop.pdfIn PDF document text
    • http://bidmitt.com/img/files/file/49648510478.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160818fc31da60---68537000950.pdfIn PDF document text
    • http://divapharma.com/uploaded/file/godujirumijigiwezonoritu.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074a4661516c---rusogudopetaxo.pdfIn PDF document text
    • https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/5oqk4p45c4nq8nhjv46q64uk8v/dozazuterifebejizew.pdfIn PDF document text
    • http://tomboy2.com/images/library/File/25089257939.pdfIn PDF document text
    • http://mariamozharova.ru/uploads/files/tejaluvudakewebixivapox.pdfIn PDF document text
    • http://www.kzhep.in.ua/wp-content/plugins/super-forms/uploads/php/files/tnpj8soam6rdeng8tu2ohmggm2/muxavenawipa.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb71a40aa6f---14852401701.pdfIn PDF document text
    • https://artasedanasingaraja.com/uploadfck/file/45584904858.pdfIn PDF document text
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b3af1c408ba---52312137982.pdfIn PDF document text
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609050ee2b18c---sawubodaji.pdfIn PDF document text
    • https://yennenga.org/business_school/uploads/file/redexivigaxija.pdfIn PDF document text
    • http://takeacode.net/user/d41d8cd98f00b204e9800998ecf8427e/file/namixapu.pdfIn PDF document text
    • http://dallassymphonyleague.com/clients/1/14/14bb4a025281f1a32078cb68571f7cf3/File/97744912422.pdfIn PDF document text
    • http://jinwoosmc.com/userfiles/file/44694169910.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=how+to+find+maximum+velocity+in+circular+motionPDF 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_off00011257.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11257 17276 bytes
SHA-256: 22e90502b36cea3897914faaa6425977e7bc086324e6ed88863e760e2af7779e
font_01_sfnt_off00013f76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F76 10928 bytes
SHA-256: 6aa1fbe14962dc0716b9ae45fead1d97fa16941392e7e4ff2ae09db5f7cac957
font_02_sfnt_off000158c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x158C5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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