Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eda428112962de4…

MALICIOUS

PDF

81.3 KB Created: 2021-07-02 15:36:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 460731e323537e291758591cebc32ef8 SHA-1: 584729aeeffe8545154b13f803bece2428492475 SHA-256: 2eda428112962de4a7d0ac5d751a04b5638345e8fda1271abfefb595234884b1
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links, many of which are hosted on compromised WordPress sites, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded links are designed to redirect users to potentially harmful content, likely for credential harvesting or further malware deployment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

Heuristics 7

  • 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608dde77b2122---62406805794.pdf
    • http://niszczeniewaw.pl/userfiles/file/zedajovapijifejibub.pdf
    • http://jarosi.hu/files/file/vuxotisutigaleven.pdf
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/78dad9de9ee04c3ff75c65a58c05b369/80701868443.pdf
    • https://willmarlakesarea2040.com/ckfinder/userfiles/files/3089709113.pdf
    • https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/e0b15dfd11e79ed27f1b9d6b10e55ef5/77916470077.pdf
    • http://ufnk.fr/app/webroot/files/file/62647160214.pdf
    • https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/3aamnhl2tbgk221mtp7frln6mq/pebezikirepe.pdf
    • http://dirabrealtors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa62f481174---65989295554.pdf
    • https://rfcorporation.net/wp-content/plugins/super-forms/uploads/php/files/d94c59e62632b9113f2203a41eeeb6e2/62178744204.pdf
    • https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/vhtaaoeuguq37f2c4ho32utchi/30408327294.pdf
    • https://afanasyev-design.ru/wp-content/plugins/super-forms/uploads/php/files/3dd0f30ef8d9cbb3cd7482eb0b934e42/74240306626.pdf
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1608340ed930b3---rowunedukozazagajetanazi.pdf
    • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/tv1vgpdjoo5km3a35nr22v7736/tipufagegebasozizozebejev.pdf
    • http://www.findvoters.com/userfiles/file/mabutoborimirefom.pdf
    • http://biolabsrl.org/userfiles/files/86580759928.pdf
    • http://clair-environnement.eu/catalogue_dynamique/file/wonizaseludusoxurusekum.pdf
    • https://najlepsze-w-polsce.pl/uploads/wopojavezudem.pdf
    • https://anthonygillant.com/userfiles/file/97712115575.pdf
    • http://faw-asia.com/image/upload/files/dasupunogikujawanepona.pdf
    • http://alpanelektrik.com/depo/sayfaresim/file/bizivasozovif.pdf
    • https://mkting.com.co/wp-content/plugins/super-forms/uploads/php/files/41d403f8b91474552a5704a7bbe4a338/bizanunewa.pdf
    • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/efavtpvcmue98ak32s4eop8pv0/86428666162.pdf
    • https://infoenergie-loire.org/userfiles/file/jajozed.pdf
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/160862ed0d97f9---30799123745.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=the+melting+point+of+ionic+compounds
    • 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_off0000da36.bin
700f5db2f46a4a2541fe1934463ffe2f3205c7aec0cb97507f11df0eb8d8e5d6
pdf-font-stream PDF embedded font (sfnt) at offset 0xDA36 17184 bytes
font_01_sfnt_off000106f6.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x106F6 16792 bytes
font_02_sfnt_off00011f0d.bin
86012e82e4482d37660abf9e17dac60e032d10391270e6a2746cee7862702dc6
pdf-font-stream PDF embedded font (sfnt) at offset 0x11F0D 10868 bytes