Malicious PDF — malware analysis report

Static analysis result for SHA-256 596f79e1db5a3ef4…

MALICIOUS

PDF

131.8 KB Created: 2021-07-31 11:07:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: 0745f6d03c0dfc01c2f04d4dd670de3a SHA-1: 3b8d7ad7be85883cccbc9ade6884472cce3cd3c9 SHA-256: 596f79e1db5a3ef4927a5de135b4929e6f75960e5ceb63d98de2cbd4725ee2d4
180 Risk Score

Malware Insights

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

This PDF file contains embedded JavaScript and a large number of external links, many of which point to compromised WordPress upload directories. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document is a link farm on disposable hosting, likely intended to redirect users to malicious content. The embedded JavaScript and the nature of the links suggest an attempt to exploit vulnerabilities or trick users into downloading further malicious payloads, aligning with common phishing and malware delivery techniques.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

Heuristics 9

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://netiko.ge/img/Data/file/xoridawado.pdf In PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078f72407f51---mevobujofezafe.pdfIn PDF document text
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/160cf2cbc39cc2---85402857946.pdfIn PDF document text
    • https://istanbulbalbir.com/upload/ckfinder/files/62581440642.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094f066ce0a9---bosexexanuvaleniboxodo.pdfIn PDF document text
    • http://esipro.lu/userfiles/file/nekamozerutulo.pdfIn PDF document text
    • http://mdfgiare.com/upload/files/tozakabow.pdfIn PDF document text
    • https://pima-alarms.rs/slicice/file/52044269436.pdfIn PDF document text
    • https://agrolliance.ca/ckfinder/userfiles/files/vajimasefan.pdfIn PDF document text
    • https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/6c602525754ab2c168d441a323e818aa/16257361196.pdfIn PDF document text
    • http://i-harmonics.com/upload/files/vofuxowofarazoxibane.pdfIn PDF document text
    • http://constantemail.com/userfiles/file/162387392827796746112.pdfIn PDF document text
    • https://xn--80afc2apd5n.xn--j1amh/upload/files/pivosenuzozitivesut.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ced705aa379---5672191490.pdfIn PDF document text
    • https://master.plus/wp-content/plugins/super-forms/uploads/php/files/67ccbdf1874e81921f6af5585a50a0da/xifebujepulatu.pdfIn PDF document text
    • http://docando.es/js/ckfinder/userfiles/files/gezegasi.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/160886b6f82eb2---82281522652.pdfIn PDF document text
    • https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/cd9421c263feea1302ec1d62719ae136/31743034158.pdfIn PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/16087f7cb175c4---vurunorimi.pdfIn PDF document text
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/160d5ea1265728---puverowujojozadenuzadatak.pdfIn PDF document text
    • https://99shayari.in/userfiles/files/lizibodaliwojobopavojiba.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=how+to+write+a+misconduct+letterPDF 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_off00019f4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19F4E 18412 bytes
SHA-256: 9c2e70faa1ab9c7e71f9faadf098f768a9aea744e7af894e9f631a0cac345e70
font_01_sfnt_off0001cfec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CFEC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001e803.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E803 10708 bytes
SHA-256: 26a7d404be390ae3b75fc2aee6d7bc839af087e3201a6be9a7feade5be2c6844

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