Malicious PDF — malware analysis report

Static analysis result for SHA-256 68e84beb0d15b3ad…

MALICIOUS

PDF

73.1 KB Created: 2021-09-08 06:34:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: d811de549d90bec7c66f224919406482 SHA-1: 3d902def5647198ec8aee1257c193c73e0907116 SHA-256: 68e84beb0d15b3ad600b6452925b217cd57eed8974a93d1236cc6eeceb1f323c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links to potentially compromised websites, indicating a phishing or malware distribution attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of an attempt to redirect users to malicious content, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/9b2d1faeb0b1a1b3fe993b96207d5eda/16714712936.pdf In PDF document text
    • http://www.uc-kushiro.net/images/library/File/totapetudogudibibeso.pdfIn PDF document text
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/aabc8a53927aadbfd1408c1778d32bcc/48870034972.pdfIn PDF document text
    • http://adbuilder.at/ckfinder/userfiles/files/tusiri.pdfIn PDF document text
    • http://moreit.ch/productinfo/file/21126869203.pdfIn PDF document text
    • http://adabaskimerkezi.com/upload/file/23838365485.pdfIn PDF document text
    • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a007fa03d78---rifazudubet.pdfIn PDF document text
    • http://coss-wynn-reunion.com/clients/d/db/dbe3622004495b304d8703879a486b7d/File/wakudagak.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612bf6dad7096---94486562098.pdfIn PDF document text
    • https://mrmobilewebsite.agency/wp-content/plugins/super-forms/uploads/php/files/98d9619b2c500aac2b40fe00d07f523f/25438935232.pdfIn PDF document text
    • https://northcoteplaza.com/userfiles/file/gemenizoragowewisenewoja.pdfIn PDF document text
    • http://peaceinsrilanka.lk/userfiles/file/12858570138.pdfIn PDF document text
    • http://icoenergia.com/userfiles/files/37319019874.pdfIn PDF document text
    • http://letresorellebio.it/userfiles/files/73108284034.pdfIn PDF document text
    • https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/222c34fb4f9d1927717136d3a5f24056/midotika.pdfIn PDF document text
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9abb2cbb4b---752246799.pdfIn PDF document text
    • http://elfobchod.cz/foto/Image/file/fuzomoz.pdfIn PDF document text
    • https://baxsporthorses.com/userfiles/file/21605432141.pdfIn PDF document text
    • https://razdolle.by/wp-content/plugins/super-forms/uploads/php/files/hf9rb531kcchkab36mk6b547k4/35744953469.pdfIn PDF document text
    • http://amctop.com/board_data/editor_img/file/202106090346.pdfIn PDF document text
    • http://piau-po21inn.com/CKEdit/upload/files/51484824238.pdfIn PDF document text
    • http://www.hausbaumesse.at/ckfinder/userfiles/files/66511620678.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d373ec2a19---bikivusete.pdfIn PDF document text
    • http://senseoftourism.dk/userfiles/file/juritojakiz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=droysen+alejandro+magno+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_off0000b950.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB950 16984 bytes
SHA-256: d1be23179f33922eaf42057a5d484d65ba031c0d9b2875e2c3ec46322a8d763b
font_01_sfnt_off0000e555.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE555 10896 bytes
SHA-256: 2f20bf0fc7759fb11c9393e978d88f2a90348b1aa1311094b2b25d7026cd4b6f
font_02_sfnt_off0000fe58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE58 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1