Malicious PDF — malware analysis report

Static analysis result for SHA-256 97ed3eebe3ba4d53…

MALICIOUS

PDF

89.1 KB Created: 2021-07-05 01:45:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 3d5025e872cf6ec3858d902634d292f2 SHA-1: e5eb94f39c63ed1ee374e152098c8a2763f78073 SHA-256: 97ed3eebe3ba4d53fd0479e1d3788531120c2b6b2c10402a10fabe48f02d9efd
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded JavaScript stream and a large number of external URIs, many of which point to compromised WordPress sites or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or redirecting users to malicious content. The presence of JavaScript (T1059.007) and the nature of the links suggest a spearphishing attachment (T1566.001) designed to lure victims.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://akiyastyle.com/app/webroot/js/ckfinder/userfiles/files/48163660865.pdf In PDF document text
    • https://pensiuneavlasin.ro/wp-content/plugins/super-forms/uploads/php/files/6bk3fcthenrb84r846f0mhq4n0/mepawizorumerig.pdfIn PDF document text
    • https://lotteppta.com/beta/assets/file/fidarolobi.pdfIn PDF document text
    • http://cablexconsulting.com/Upload/file/29302829499.pdfIn PDF document text
    • http://www.hangmandigital.com/files/file/gunaxewujixataf.pdfIn PDF document text
    • https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/7m0p917o45bngk8vmrb6nm3em4/66604251730.pdfIn PDF document text
    • http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/1609444a954b70---85650773680.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/00a93c9dcaea34ed8d66de6facaec9af/20639868133.pdfIn PDF document text
    • https://smilepath.com.au/wp-content/plugins/super-forms/uploads/php/files/359b0a8fa6136523059520be9a104ac6/rovipolumurasal.pdfIn PDF document text
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c19d888efb6---ligalekoxoxometewirevir.pdfIn PDF document text
    • https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/319f5af69de2c87e63d27de5c8bc78fa/kotasuvagamexanek.pdfIn PDF document text
    • http://ychnjl.net/userfiles/files/97961041732.pdfIn PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d9d805b762---pumubiwizi.pdfIn PDF document text
    • http://paradisoseminatrici.it/userfiles/files/lipesekojugag.pdfIn PDF document text
    • https://nscs.org/wp-content/plugins/super-forms/uploads/php/files/bb265c131f6d0dfdabc07140ac9d401d/nafavigaxijepugojogen.pdfIn PDF document text
    • http://asea-admin.com/_userfiles/file/20210629090024.pdfIn PDF document text
    • https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/fd631183fb1e4eb0b4bd7c7d5cc2d44a/65521047351.pdfIn PDF document text
    • https://grandplaza.bg/uploads/assets/file/42691324224.pdfIn PDF document text
    • http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c92b4218aba---52661836148.pdfIn PDF document text
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609322b58bcb5---nosefipiwofitasud.pdfIn PDF document text
    • https://burlingame.com/wysiwygfiles/file/kimimofidikisatedeberu.pdfIn PDF document text
    • http://intergeored.com/upload/File/89947428403.pdfIn PDF document text
    • http://studiolegalebisantis.it/userfiles/files/29947592137.pdfIn PDF document text
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/9557cc3b6102eae4e088bed1bf526867/fepozararag.pdfIn PDF document text
    • https://nstoplana.rs/ckfinder/userfiles/files/biparuxap.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=android+auto+video+player+without+rootPDF link annotation
    • 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7FA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001100c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1100C 17068 bytes
SHA-256: 65e97b0c095c88441b790bd532cd187e4cc77dbfd27746fda27c5205f8fb09a2
font_02_sfnt_off00013cc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CC1 10668 bytes
SHA-256: 517d481e527741d09a13cb905ff5f37e697104468392d2c09199fbb47fc92f55

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