Malicious PDF — malware analysis report

Static analysis result for SHA-256 46e8653fc0ae4f79…

MALICIOUS

PDF

82.8 KB Created: 2021-09-01 23:15:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: fbf3fa253807841d497627ec2887ac92 SHA-1: 6bbb08392b77e30e58bd230295abda38462149ec SHA-256: 46e8653fc0ae4f790c461c65f2637845f5d3b4763b02ddd1f146d6160d3ae4ab
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous external URIs and link farms pointing to potentially compromised WordPress sites and disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://queure.ru/uplcv?utm_term=delayed+allergic+reaction PDF link annotation
    • http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1610786970d61d---38682748679.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160714565a4888---7771350924.pdfIn PDF document text
    • https://stabiactiv.com/userfiles/file/baradivunedasujozi.pdfIn PDF document text
    • https://www.bevillelecomte.ovh/ckfinder/userfiles/files/burogotekajavekivisav.pdfIn PDF document text
    • https://communeouchamps.fr/userfiles/file/texixopolo.pdfIn PDF document text
    • http://xn--9p4b29dncp2cc6y.net/upload/fckeditor/file/kiped.pdfIn PDF document text
    • http://gatewayhotelbangkok.com/upfile_hotel/files/kuzavemopedoninoj.pdfIn PDF document text
    • https://helicopterleasingservices.com/userfiles/files/xokuzi.pdfIn PDF document text
    • http://sieuthihatgiong.vn/webroot/img/files/janufekanikopisupidunifaw.pdfIn PDF document text
    • https://pragatitic.org/ckfinder/userfiles/files/vefimujet.pdfIn PDF document text
    • https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/4c80e005d11fe674e64f72bb2610168a/dokafikuwa.pdfIn PDF document text
    • http://kibbkw.com/uploads/files/vidotikomupi.pdfIn PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160869586d5b1c---kegawilawofadokoxivapoxe.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d728aaad54---fizejidunuxetikofagi.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cc82a61957---68847679110.pdfIn PDF document text
    • http://wooshin.kr/uploaded/file/7256487360daef455c5cd.pdfIn PDF document text
    • https://pelicanfinancialnetwork.com/ckfinder/userfiles/files/veturepinagunum.pdfIn PDF document text
    • http://quangcaosms.org/media/ftp/file/80959309771.pdfIn PDF document text
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/c78d5fe2387db3a482015b77d151ef59/96381067186.pdfIn PDF document text
    • http://skiflogistics.ru/userfiles/file/1092860376.pdfIn PDF document text
    • http://tragadsonisurat.com/ckfinder/userfiles/files/63589362851.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/fd8334980fe57f1d69aa5a83ee94c6ec/durovelud.pdfIn PDF document text
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/69eb3f43c20cab4cb296cf343c677664/34562959666.pdfIn PDF document text
    • https://tonwen.org/userfiles/file/folokulefemukixan.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_off0000dfd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD1 10492 bytes
SHA-256: 4bdd9c71a5ee73a5e99aafa3acd76464db1b030d8a19b21c7672966e34ef8bcb
font_01_sfnt_off0000f78f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF78F 18000 bytes
SHA-256: 59f088934427292863e00ed2500a9f2c97da0099327d2aa9d48efee09e52caef
font_02_sfnt_off0001258e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1258E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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