Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed02435123f8e72a…

MALICIOUS

PDF

85.9 KB Created: 2021-08-21 13:33:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e2827c932798d85359119618753140da SHA-1: 3ba88ccb61597fb93b84805b691697dd7aa27ad8 SHA-256: ed02435123f8e72a2a2340666495b80b3e4b686334232a628c2a2677f86d75a9
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external links, many pointing to disposable hosting or compromised CMS uploads, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. The presence of embedded JavaScript (T1059.007) further supports its role as a malicious document, often used in spearphishing campaigns (T1566.001).

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://amphorabeautyclub.com/campannas/file/mamewapotigaruxedomuz.pdf
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d942430646---15912238633.pdf
    • http://amandatour.ru/js/ckfinder/userfiles/files/79813955451.pdf
    • https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/8mo5ov19v5aubi2efb6hp0sg62/vopilojedefifakanipoturo.pdf
    • https://sanipro.ma/app/webroot/uploaderfiles/33199426847.pdf
    • http://jshanwoo.com/ckfinder/userfiles/files/sevotepesagunires.pdf
    • http://barrybusiness-crm.com/ressource/devis-photo/files/66791195192.pdf
    • http://saamfactory.com/wp-content/plugins/super-forms/uploads/php/files/122234035ec9eb2d4696b5d7e096b8ea/15421702134.pdf
    • https://medgal.pl/admin/ckfinder/userfiles/files/16658535859.pdf
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/0a91ea1a2ab70eab85ea5e884f1ea551/tujasodojikibuwoto.pdf
    • https://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/12959450e9f872509f226e8661cbd57e/jejalebiben.pdf
    • http://xn--spreewaldpension-lbben-9lc.de/meineBilderAlbertGrundschule/file/vixaw.pdf
    • http://euro-ex.net/images/blog//file/karomuxiwavakokodufokuga.pdf
    • http://studiotecnicoforace.eu/userfiles/files/giwokevabojiwojuti.pdf
    • http://amandatravel.com/userfiles/file/65567513590.pdf
    • http://www.fotografoeventimilano.com/wp-content/plugins/formcraft/file-upload/server/content/files/160986c8e7d1fe---11197315706.pdf
    • http://miwon.com.vn/app/webroot/uploads/files/nejopize.pdf
    • https://ekransamara.ru/files/tapamunubabamalojura.pdf
    • http://omak1968.com/clients/71178/File/bewazibuwase.pdf
    • https://celovechurch.org/wp-content/plugins/super-forms/uploads/php/files/62aec0b83a377a0cdc89606c13710b80/404568038.pdf
    • http://albatrossmrn.com/konadnew/userfiles/file/27253040718.pdf
    • http://i-harmonics.com/upload/files/sezuzozumafepigolaf.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=wic+reset+key+crack+download+rar
    • 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_off0000e98f.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE98F 16792 bytes
font_01_sfnt_off000101a6.bin
6e74edb39443fd7b500e15a744b816db4e908787733c123daea25d3b2d26f380
pdf-font-stream PDF embedded font (sfnt) at offset 0x101A6 10648 bytes
font_02_sfnt_off00011a41.bin
5ae3774ac966e0257d2286b97fea680f8a6aa1f45d13953edd91577c0d13623a
pdf-font-stream PDF embedded font (sfnt) at offset 0x11A41 18044 bytes