Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e067d42692e367a…

MALICIOUS

PDF

79.6 KB Created: 2021-09-09 00:43:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 26ce0087a2f6fcb0db9217cde65484c4 SHA-1: 293df3c193c260029d0c87ace5b16d3521e66e4c SHA-256: 5e067d42692e367a9dc4c3deea9ef65ce9d399182251ad953b9c1e327ecb0c82
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the overall structure indicate an attempt to trick users into visiting potentially harmful sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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 https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/71ca60e8fd1da044962efe24d2eb52e6/44047763522.pdf In PDF document text
    • https://www.verimevzabavu.cz/ckfinder/userfiles/files/16542000217.pdfIn PDF document text
    • http://synagoge-stommeln.de/ckfinder/userfiles/files/96652863463.pdfIn PDF document text
    • http://lignumweb.com/site/webroot/uploads/files/nujagadojupibozolitaz.pdfIn PDF document text
    • http://filippodelvita.com/demo/userfiles/file/navenitopowowiwugapiwav.pdfIn PDF document text
    • http://asesorgubernamental.com/images/file/26560455007.pdfIn PDF document text
    • http://sprinter-lab.ru/content/File/47782040061.pdfIn PDF document text
    • https://areopag.ru/sites/default/files/uploads/tutulavefe.pdfIn PDF document text
    • https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/tq0q7ph489g3ee1s0cmtrkvi1s/wexalo.pdfIn PDF document text
    • http://mosme.org/uploadfile/files/woxinenizadune.pdfIn PDF document text
    • http://pickup-ws.com/userfiles/files/dadopipezugoxulokofulo.pdfIn PDF document text
    • https://www.pension-chevaux-haras-gabereau.fr/ckfinder/userfiles/files/92871325178.pdfIn PDF document text
    • https://ltssinternational.com/res/wysiwyg/file/vudogufogelenikov.pdfIn PDF document text
    • http://cokhilegia.com/upload/files/55257459436.pdfIn PDF document text
    • https://delaneyllc.com/ckfinder/userfiles/files/wedavose.pdfIn PDF document text
    • https://biserica-izvorul-tamaduirii.ro/files/4160752510.pdfIn PDF document text
    • http://neonatal-surgery.ru/userfiles/files/67517859109.pdfIn PDF document text
    • http://studioarchoggianiepartners.it/userfiles/files/kolodedifaki.pdfIn PDF document text
    • http://www.sport-konyv.hu/userfiles/file/32618528646.pdfIn PDF document text
    • https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613564b319832---xujesivodosavomawiwejesi.pdfIn PDF document text
    • http://newworldss.com/uploads/file/babirinivinuxunez.pdfIn PDF document text
    • http://infinity-pro.ru/userfiles/file/pakelegadagato.pdfIn PDF document text
    • http://broadgatecapital.com/userfiles/file/somotozenitifetaguxulegaz.pdfIn PDF document text
    • http://zeshengtecphar.com/UploadFiles/FCKeditor/20210901082530.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=gujarati+ebook+free+downloadPDF 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_off0000d648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD648 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ee5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE5A 15976 bytes
SHA-256: 54a84ab27e2c6d2addb22a7146527054bf61bcb61e12480f0c423b0721991b5e
font_02_sfnt_off00011797.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11797 10768 bytes
SHA-256: f89194eef0bf84e6132183f159809352155cc89e568eaedcb4c31a9a6c25bd5b

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