Malicious PDF — malware analysis report

Static analysis result for SHA-256 834271aed9933951…

MALICIOUS

PDF

80.0 KB Created: 2021-05-05 05:13:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3000893e9c9877d1793e3c34072236bb SHA-1: 2a001e322001a7fdfc9af7d1c49b606e871e8298 SHA-256: 834271aed9933951c5fa8e5de0def7c006b40c31637bf7a9327b346d1caaafb0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It functions as a link farm, directing users to multiple external URLs, some hosted on compromised CMS uploads and disposable domains. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to lure users to external sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7787

Heuristics 5

  • 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
  • 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://anfauglir.com/images/file/9196402424.pdf
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/16090f863e9739---kuzenikepuliwab.pdf
    • https://dixietemporarystorage.com/wp-content/plugins/super-forms/uploads/php/files/ef775e89fa6bbdc4bbaca391e81473ce/fogilalewozer.pdf
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075c4eb4b0b5---levarajozugirorabax.pdf
    • https://daleplumbinginc.com/wp-content/plugins/super-forms/uploads/php/files/320323d4d3aa4bbb9eaeb5a2a6c4608f/28044229981.pdf
    • https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/qav488ae5l9h33e08bjqkgftrc/85989991769.pdf
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607f5ffea69be---xiluwevudureza.pdf
    • https://svetpoznaniyaonline.ru/wp-content/plugins/super-forms/uploads/php/files/0d50dd35d5b8a068234ee8ce03729702/85229244025.pdf
    • http://raunlarose.us/wp-content/plugins/formcraft/file-upload/server/content/files/1608fda23704d0---76045836004.pdf
    • https://davebakeragency.com/wp-content/plugins/super-forms/uploads/php/files/7c75e41759f0bddb5aeb3a41a9db319c/xavesanalemavel.pdf
    • http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087890516cbc---koraxedoxosubelovipi.pdf
    • https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/bn9f69bq3b1oor3kv205lkckk0/mivegexuzixejakukefagu.pdf
    • https://www.hemoroidklinigi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078834813ce8---nokexemeku.pdf
    • http://associacaoguainumbi.org.br/wp/wp-content/plugins/formcraft/file-upload/server/content/files/1607b9875c16c4---99081203734.pdf
    • https://www.sahabatkeluargahomecare.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ee95072b05---18603837059.pdf
    • http://amazingindiaphotos.com/amazingindiaphotos//upload/fckimage/file/gedoronesofedebeludofe.pdf
    • https://thriveelearning.com/wp-content/plugins/super-forms/uploads/php/files/72a06903b7902ffc66b844486569807e/literavukezaxusanulesoza.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=the+righteous+brothers+greatest+hits
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001326f.bin
a021411c1db6dcdd064111a754ad19ea557f1c20afbbf7c6506a0c6543e1a6f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1326F 5004 bytes

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