Malicious PDF — malware analysis report

Static analysis result for SHA-256 abe0630845938284…

MALICIOUS

PDF

91.5 KB Created: 2021-06-30 09:59:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 59bd9f291faa6d9bae60ab4c1ee04e01 SHA-1: c73dbcabd8c856467746c210a80b8f4c80b2fe55 SHA-256: abe063084593828474d30295c0bbaf15aa9f6b014571de89d783ed16082d7da3
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript and numerous links pointing to external websites, many of which appear to be compromised WordPress installations. The presence of JavaScript and the link farm structure strongly suggest an attempt to redirect the user to a malicious site for phishing or to download further malware. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 8

  • 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.
  • 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 https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/deaim5qrdnoc2j3ne7d37mgr16/34205255398.pdf
    • https://www.plsok.com/wp-content/plugins/super-forms/uploads/php/files/3663de145ebe6fbf0fc676ca9b0e5fbd/48268588283.pdf
    • http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/ed2c6c8b451ade0e4f134fc9c92b0be7/80619350067.pdf
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/349023f4ef83f373aedad088087b695d/jezofobabugomizejuxoviri.pdf
    • http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086b42127f1d---4220042072.pdf
    • https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/6ba64cde01ec90d2eae79071a7a55a59/ponox.pdf
    • http://curry-box-deluxe.de/userfiles/file/13221844473.pdf
    • https://www.nrlandscapes.co.uk/wp-content/plugins/super-forms/uploads/php/files/a0cc17f436ec0b5c4050f5a96a61deba/43023732683.pdf
    • http://alexlunacoach.com/img/editor/file/3829754254.pdf
    • http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607479c447340---74687735684.pdf
    • https://allcreaturesinc.com/files/files/balevogupuxefetin.pdf
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b9c9e0cab77---78723866037.pdf
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608f0cb609181---sedawamapolelozexoge.pdf
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609ea20a861cd---rezosizozegi.pdf
    • https://thejasmineway.net/wp-content/plugins/super-forms/uploads/php/files/e8nmejrk8nhk816ld6a64mpuls/39214109559.pdf
    • https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/066efd9440015c9af32d95215f7be01a/56295674089.pdf
    • https://kasihpaham.com/contents//files/wabipoti.pdf
    • http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/951b47201422c474f47a0472e7e19ee9/loluvefozivabux.pdf
    • http://www.bandungmesin.com/file/14428800950.pdf
    • https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/16087c6a7f0c5b---77614201279.pdf
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/1607e87401ca11---gibizi.pdf
    • https://www.areatransfers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2859d0b4ac---38061958427.pdf
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/1rgbvf32j1ab8qf1ul82c3e08t/42387111398.pdf
    • http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607368e2428bf---26061381769.pdf
    • http://docando.es/js/ckfinder/userfiles/files/lazibabedodew.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=sun+and+moon+episode+12
    • 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_off0000f946.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF946 16792 bytes
font_01_sfnt_off00011158.bin
ad2b4cb6ae695690bfd377e8890e4f5a36f10c193a419cd140dfaefe1aff3391
pdf-font-stream PDF embedded font (sfnt) at offset 0x11158 24916 bytes
font_02_sfnt_off000146f9.bin
c49211c36b93f3eba267e76448af44db8a096e517e4dabe060445954a91deae7
pdf-font-stream PDF embedded font (sfnt) at offset 0x146F9 10656 bytes