Malicious PDF — malware analysis report

Static analysis result for SHA-256 24e63f7cf99e34d1…

MALICIOUS

PDF

73.5 KB Created: 2021-10-19 21:59:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 0778fd7a41a8db3a418391a6fc4aa112 SHA-1: eb06262066f17b05288eea0a687bb68087089bf0 SHA-256: 24e63f7cf99e34d1b92c3e7f9bb80dcd0681a8f416b75d4c802d7249f22eccc5
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs pointing to external websites, many of which are hosted on compromised CMS platforms or disposable domains. The primary purpose appears to be directing users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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 http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/770754268614b664eedc02.pdf In PDF document text
    • https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/i7b658qipr5j4ugucvnfcc970k/gegimugetapabokodu.pdfIn PDF document text
    • https://iwanbim.com/userfiles/files/76173688671.pdfIn PDF document text
    • http://topoint.cc/userfiles/fckFile/20210926070238.pdfIn PDF document text
    • https://piphoto.tw/uploads/files/202109120750081236.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/161337088937b2---dusuburikagedosinulaxobow.pdfIn PDF document text
    • http://tythb.com/uploadfile/files/23111109522.pdfIn PDF document text
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/161377d4c93ce6---23657635102.pdfIn PDF document text
    • http://ranchobg.com/img/file/6005072463.pdfIn PDF document text
    • http://www.medicellbank.com/userfiles/files/mefonafimivizepusiw.pdfIn PDF document text
    • http://keifo.ru/ckfinder/userfiles/files/wopepezipotiru.pdfIn PDF document text
    • https://uclerbaklava.com/resources/file/pajugokutugir.pdfIn PDF document text
    • http://vertex-decor.com/userfiles/file/22484179724.pdfIn PDF document text
    • http://bilafafafa.com/shopadmin/upload/files/zuxogiwonamo.pdfIn PDF document text
    • http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16155b6bbacfa3---zisilagixikerinakewowixa.pdfIn PDF document text
    • http://webantikvarium.eu/tmp/vivokesivip.pdfIn PDF document text
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/9dd98e2bad28769a2f7b7a51e1a90490/lamaviluvidawoka.pdfIn PDF document text
    • http://italy-ex.com/images/blog/file/57480790336.pdfIn PDF document text
    • https://newsale.linyn.mobi/upload/ckeditor/pages/files/22528011774.pdfIn PDF document text
    • http://xn--ob0bjxt9h99icicrvkksa421cwwp7hiv4d6a.net/ckfinder/userfiles/files/92899878019.pdfIn PDF document text
    • http://studiolegalebisantis.it/userfiles/files/munofapizemi.pdfIn PDF document text
    • https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/0o8rjplm6d96v0v6p9iuj0m2jh/wikijinofibog.pdfIn PDF document text
    • http://masonhn.com/d/files/bipuwevemexuv.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/HKUGBsJGI0E/uplcv?utm_term=pedro+lenza+direito+constitucional+esquematizado+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_off0000bab0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAB0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d2c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2C7 11088 bytes
SHA-256: 18e9dafe3a7e57f87b3ea226585489a4737b3ae5c75eb4f69152a6026e704fe1
font_02_sfnt_off0000ec6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC6A 17628 bytes
SHA-256: cbb7290f23e03623c87483cd369ecc54ba01fd2410eabd98e084932a32f0b43a

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