Malicious PDF — malware analysis report

Static analysis result for SHA-256 96072bb5e2afd105…

MALICIOUS

PDF

74.9 KB Created: 2021-09-26 00:08:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: b3871f826b97d3ee052ec34a5709a6ab SHA-1: 00779fc321f5991e83d5fde6d4904048a0390e51 SHA-256: 96072bb5e2afd105aa3ef5a99463579b6f73674c77e5860c4c8393b885cb62bd
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a link farm pointing to various domains, including one that appears to be a compromised CMS upload storage. The primary URL suggests a lure for downloading VPN software, which could be a pretext for delivering malware. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

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://garglob.ru/uplcv?utm_term=psiphon+vpn+download+for+android PDF link annotation
    • https://www.sensiblemachines.com/ckfinder/core/connector/php/files/78447412830.pdfIn PDF document text
    • https://autohausnschmidt.de/userfiles/file/50154725470.pdfIn PDF document text
    • http://champaigncursillo.com/userfiles/file/babugaminasuzor.pdfIn PDF document text
    • https://hamayeshniroo.com/shop/file/juforev.pdfIn PDF document text
    • https://forumsevens.com/images/file/fegilu.pdfIn PDF document text
    • https://htchninc.com/d/files/89411368856.pdfIn PDF document text
    • http://www.sczct.com/up_files/file/33604008111.pdfIn PDF document text
    • http://scenekunstskolen-efteruddannelsen.dk/ckfinder/userfiles/files/80078195098.pdfIn PDF document text
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614e0287af800---20789591651.pdfIn PDF document text
    • http://shethof.ch/cgi-bin/dynamisch/file/68043070581.pdfIn PDF document text
    • https://myshalewell.com/userfiles/file/korigegovatowo.pdfIn PDF document text
    • http://wideanglepackaging.com/ckfinder/userfiles/files/livupozivileku.pdfIn PDF document text
    • http://deaprogettazioni.it/userfiles/files/ruparitupibarinonugukufi.pdfIn PDF document text
    • http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1612ee6da18056---31338750427.pdfIn PDF document text
    • https://hunghiephuylog.com/upload/files/mikagetiranejukemuv.pdfIn PDF document text
    • http://geosond.pl/userfiles/file/jolejedajesegemibosuje.pdfIn PDF document text
    • http://worldnaturalfood.com/image/upload/File/66255924697.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/161477bbc007f6---50793400048.pdfIn PDF document text
    • https://bdlvn.com/steel/upload/files/12696105737.pdfIn PDF document text
    • https://bluetact.com/ckfinder/userfiles/files/lizububagatujodek.pdfIn PDF document text
    • https://viveironativodevicosa.com.br/ckfinder/userfiles/files/voxamoba.pdfIn PDF document text
    • https://hopefor.today/wp-content/plugins/super-forms/uploads/php/files/2e1012cd5e16d11cd55802db64a498d3/ferexotona.pdfIn PDF document text
    • http://multiseal.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/16146f8e07e8db---24861895452.pdfIn PDF document text
    • https://mavibusiness.it/file/20646074197.pdfIn PDF document text
    • https://wtmasonry.com/ckfinder/userfiles/files/manitiwofokibixorexogas.pdfIn PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f207faa6ee---51406584344.pdfIn PDF document text
    • 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_off0000be78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE78 10520 bytes
SHA-256: 82c98b8f8d9f6ff07072c895a73931a61639a669054cccf212aa16c2cd160574
font_01_sfnt_off0000d65b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD65B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ee6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE6D 18480 bytes
SHA-256: 0871a3ce23bb3a830f6b4812520767f1881c0eec5e789f264c664e077e8fddf5

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