Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc2ee9173deb012d…

MALICIOUS

PDF

114.8 KB Created: 2021-07-14 05:56:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 7c7ea2ee17c6370f7c1e15ce5d8931da SHA-1: 17d83932cacd453f1d82b2ff4e8b10b7a0007cf0 SHA-256: fc2ee9173deb012d442156ef5da29d929350006594b8231245b01eb11a4ff063
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. No scripts were extracted, and the document body was unreadable binary data.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9925

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 http://big-blue-bus.com/pics/fotos/1/file/28219992220.pdf In PDF document text
    • https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/n04sdtu29oiemvqle6cci5gj31/mukilunijo.pdfIn PDF document text
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16081ac8431f69---bufixuxaxisivozogekefediv.pdfIn PDF document text
    • https://pk-kuepfer.ch/ckfinder/userfiles/files/29271109798.pdfIn PDF document text
    • http://imailbox.nl/images/uploadedimages/file/paginigo.pdfIn PDF document text
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/0245d7958a7f54afe0003828779cab9d/60935200843.pdfIn PDF document text
    • http://sowitech.vn/upload/files/36290698746.pdfIn PDF document text
    • https://www.idromeccanicasrl.com/idromeccanicasrl.com/wp-content/plugins/super-forms/uploads/php/files/dede2671c81dadd46a094e49f270b97f/gaxeterapuse.pdfIn PDF document text
    • https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/uo01s2rtvrkohfvme4tuov5tf9/dezuxutufesez.pdfIn PDF document text
    • https://wavesmaroochydore.com/wp-content/plugins/super-forms/uploads/php/files/lmptas1l1g64g1janksp3dsp5e/83794287679.pdfIn PDF document text
    • https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/166c988cdd56d0054e9a977a6a26bf13/86520657556.pdfIn PDF document text
    • http://zcapitalcrm.com/app/webroot/uploads/files/demamose.pdfIn PDF document text
    • http://www.maderas-navarro.com/ckfinder/userfiles/files/29718902425.pdfIn PDF document text
    • http://vakoplus.cz/klienti/devel/sneznerolby.cz/ckfinder/userfiles/files/liduzakida.pdfIn PDF document text
    • https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/868c0f1ddde51477e0141a73e44922ed/nesipo.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/lpoc68pi9pauqh393pntq81916/nogalanatatixawame.pdfIn PDF document text
    • http://alpha-th.com/userfiles/file/90612123586.pdfIn PDF document text
    • http://dsacare.com/admin/uploads/file/88594909781.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/160857e5de0ed3---kuweluzerexadupimirip.pdfIn PDF document text
    • http://agcslohian.com/userfiles/file/97778072532.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/bptha1fpl4uit7te8omttfm8v7/96750904557.pdfIn PDF document text
    • http://zonwering-nederland.com/ckfinder/userfiles/files/gifab.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=secret+keeper+sister+quotesPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014acf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14ACF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000162e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x162E0 16060 bytes
SHA-256: c6549f22251a7c672008a5db7f07691c42d3183154b8b4cd03972a27c3442328
font_02_sfnt_off000177f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x177F7 10468 bytes
SHA-256: ad84e18ed0f616e131ffe4ec3940646f8b8cdef97fff359d8f254a3f1272ed3b
font_03_sfnt_off00018fd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18FD5 17244 bytes
SHA-256: 99fa0162aebdce8c85d798bb605fcb9787c17e0a6edb0ef8a8c2df0978cb9338

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