Malicious PDF — malware analysis report

Static analysis result for SHA-256 05ce1a8285401c5c…

MALICIOUS

PDF

102.1 KB Created: 2021-07-05 10:48:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 052fa61e7d77126ccc8b14ba4e6d0756 SHA-1: 75f00c9140900ade2a43ef473c55e6f26f8948ab SHA-256: 05ce1a8285401c5cf3ffa374e4426aab9e0ab11ae33397e0299090247d00a32b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised websites and disposable hosting, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are indicative of a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9934

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://ilovemynewstemcells.com/clients/865932/File/modusaxuxixirinibapojalo.pdf
    • https://daluxerealty.com/wp-content/plugins/super-forms/uploads/php/files/1sm6i22802gu0oklr062tek0k3/95736546670.pdf
    • https://singaporenotarypublic.com/wp-content/plugins/super-forms/uploads/php/files/7aa4448ad1fb76f972480d462357a63a/53162018974.pdf
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b7c2f502a87---74409782756.pdf
    • http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/160cabe4acfa9e---43035550333.pdf
    • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/onl9v9iccmsmvvudanstjcouna/73702220673.pdf
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609f56d525683---jimazinet.pdf
    • http://omonetach.pl/foto/ilustracje/file/89561939001.pdf
    • https://galerie-louise.be/userfiles/files/65339122622.pdf
    • http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160cf97f056551---8964752196.pdf
    • https://encoregallery.us/wp-content/plugins/super-forms/uploads/php/files/a5be0ee9a777019d9370c28834028c71/widatosiwodetusago.pdf
    • https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/3d501ea85dffd0706f0a0dfe85d8102b/95815796905.pdf
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a2ba6fd34a4---70615413800.pdf
    • http://vankouwenenmastop.nl/UserFiles/file/gebedetolutiwubobiko.pdf
    • http://thietbiotoviet.com/Images_upload/files/tikarulaben.pdf
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c56dc397c1d---37952999977.pdf
    • http://agcslohian.com/userfiles/file/penuvukamofomiweg.pdf
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607835faaefd5---40461488535.pdf
    • http://i-daa-wl.de/userfiles/rogubekorenijuwazajo.pdf
    • https://marljivo.hr/userfiles/file/83767073353.pdf
    • http://almar-bus.pl/userfiles/file/bodumogaxanavajamigesuxum.pdf
    • https://www.hamburgeriaagricola.com/wp-content/plugins/super-forms/uploads/php/files/5f5ksi6lvhf89u69392t9vigb0/gikadomuboxidukomigitus.pdf
    • http://kondicionery-vidnoe.ru/upload_picture/file/kinutisumiburusisisexizos.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=squatters+hop+rising+double+ipa
    • 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_off000128e4.bin
cc67338b3df9d6877dfa7802ce5dfbf6243fc9e453628b1805f67fa1b272908f
pdf-font-stream PDF embedded font (sfnt) at offset 0x128E4 11132 bytes
font_01_sfnt_off00014207.bin
0044eb2a038a5feb9a67d2310460914663b094c41c894abb718fc4e8f4a65455
pdf-font-stream PDF embedded font (sfnt) at offset 0x14207 19080 bytes
font_02_sfnt_off0001735c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1735C 16792 bytes