Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d6dad94ea2d89c7…

MALICIOUS

PDF

74.5 KB Created: 2021-09-04 05:23:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 6c850673f51c02bbf1b5c1260794e877 SHA-1: a41440859e824bad161398fcb23904a6e22e305b SHA-256: 6d6dad94ea2d89c77c17db8703fbafba42498404e94633613858157fce90f72f
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and a large number of links pointing to compromised websites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document is a link farm on disposable hosting, suggesting an attempt to redirect users to malicious content. The embedded JavaScript likely facilitates the redirection or exploits vulnerabilities, contributing to the overall phishing or malware distribution goal.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 7

  • 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.
  • 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://mygoaltv.org/ipp/images/uploads/files/25872971902.pdf In PDF document text
    • https://member-amz-seller-system.de/wp-content/plugins/super-forms/uploads/php/files/326fa99a3f3aa99111a06b7c1c407804/maxogatofuxilumokini.pdfIn PDF document text
    • https://paidionresearch.com/userfiles/files/zixuvinif.pdfIn PDF document text
    • http://fecirturizm.com/resimler/files/53643266006.pdfIn PDF document text
    • http://wildpflanzen-planung.de/file/fufuwutez.pdfIn PDF document text
    • http://vipnjl.com/userfiles/files/tijiwibigugedokopemerelor.pdfIn PDF document text
    • http://niestachow.pl/data/aktualnosci_imgs/file/wuxogabagejufiwijexoxeva.pdfIn PDF document text
    • https://cam-ceeds.org/ckfinder/userfiles/files/74000747042.pdfIn PDF document text
    • https://aldea.work/wp-content/plugins/super-forms/uploads/php/files/9ffb8be79ed53b00d4d1ed979da28369/81320248043.pdfIn PDF document text
    • http://www.melloecastro.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077f781ca9be---38206835206.pdfIn PDF document text
    • http://nissanotogovap.net/uploads/images/files/bujerizides.pdfIn PDF document text
    • https://orangcar.com/app/webroot/upload/files/zonowiluwoxunotafejizof.pdfIn PDF document text
    • https://eagle-aviation.com/userfiles/files/vasatapokojewumisuxevo.pdfIn PDF document text
    • http://kimwendelldesign.com/ckfinder/userfiles/files/riniba.pdfIn PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/a21d12ec48740cae56b3786073729037/32141865055.pdfIn PDF document text
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f48ec48cec---lafuwabasuluvagaxixanoz.pdfIn PDF document text
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608f7525e435b---rowofifutifeje.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b489be8dbbb---nixalekibixizavixif.pdfIn PDF document text
    • http://pololanna.com/user_img/files/59006366802.pdfIn PDF document text
    • http://epoch-making.jp/js/upload/files/dasusup.pdfIn PDF document text
    • http://abwmountvernon.com/uploads/files/figuxojesozoxusalananof.pdfIn PDF document text
    • http://bazatalty.pl/wp-content/plugins/super-forms/uploads/php/files/8492a70bf0b727bd377ddff9b67a2660/gesaki.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=customer+relationship+management+journal+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_off0000bea0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEA0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d6b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6B7 11208 bytes
SHA-256: 78665ba8991e9715396c3adbab0759a18166367fb08561d770f85045a01d0fe1
font_02_sfnt_off0000f082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF082 16820 bytes
SHA-256: 9c0947b025501a3bc53773f6b3075f8ec4392d83f96755eb444c12ad955905c0