Malicious PDF — malware analysis report

Static analysis result for SHA-256 fec726518e6dfcfe…

MALICIOUS

PDF

86.3 KB Created: 2021-06-25 23:27:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: ff7a9de09a5c69c26fa67f87ac9e85c4 SHA-1: 838dae604962827a1fd94186821c0f41953a3e67 SHA-256: fec726518e6dfcfefeccbbee0356e48db64b917b34ca019847aec1cadf07abce
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://interesttour.com/wp-content/plugins/super-forms/uploads/php/files/b4599e079f077e9ebcb246463509d03b/tufajek.pdf
    • http://www.advokat.com/app/webroot/img/fck/file/lorozazomagafanubakef.pdf
    • https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607e98e08285e---54952792484.pdf
    • http://www.festivalmarrakech.info/wp-content/plugins/formcraft/file-upload/server/content/files/160b92e65ddbc6---64065218174.pdf
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160850fb5a8e31---gimutajamuno.pdf
    • https://medicinasolidale.org/wp-content/plugins/super-forms/uploads/php/files/61706fe32f95b03fcd1c5df1f048c6cd/zeboxemixulabiwumodexe.pdf
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a446ff1543a---numisefikupezipiramowigu.pdf
    • https://augsburger-dartliga.de/uploads/file/50937548169.pdf
    • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/04ffb92491f02c0263ea6bea27185604/povokedorivegujerabapefug.pdf
    • http://rjbmachinery.com/d/files/tasirodulupinofopufe.pdf
    • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e8230c1748---51049443515.pdf
    • http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/fescqsg68nlomjdug8c3tq5e5l/xitevalemisek.pdf
    • http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608030ad79bea---82368176963.pdf
    • http://akcjonariusz.com/UserFiles/file/10853483027.pdf
    • http://abcbyspu.net/ckfinder/images_store/files/zugegaden.pdf
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9a367db064---xuzegujaponeluzajonibogix.pdf
    • http://upperdublin1970.com/clients/3/3b/3b2fb281f4756d03d37a29c41a8c1d95/File/44674294469.pdf
    • https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bfadfdf303b---vobazevubefogakikorela.pdf
    • http://antansconstructions.com/ckfinder/userfiles/files/pemufesesoduwoz.pdf
    • https://medgarlci.com/wp-content/plugins/super-forms/uploads/php/files/f1fc403dbf9f2f57683bb3a07446e895/nezisig.pdf
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a1b40231bd---balewamizepimavaz.pdf
    • http://hyunbulsa.org/~ewedd2/userfiles/file/16012986495.pdf
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8501b93d84---sodupabovurevikex.pdf
    • https://www.ideaklinik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608291d9154ac---72889852775.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=dirty+text+messages+for+him+to+wake+up+to
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb96.bin
b49e53bbc4b46d027f0cf4f22b2463d5213398ab250c502418d6f68532d68b04		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB96 17556 bytes
font_01_sfnt_off000119a7.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x119A7 16792 bytes
font_02_sfnt_off000131be.bin
47c5ea11cd92686dae6519dffc35d7e612e281a341c5f1f6857f15bbef2b0080		 pdf-font-stream PDF embedded font (sfnt) at offset 0x131BE 11152 bytes

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