Malicious PDF — malware analysis report

Static analysis result for SHA-256 d702ff42660d8e64…

MALICIOUS

PDF

103.5 KB Created: 2021-07-21 12:42:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: fec7c97a30310f0da0682b972647285b SHA-1: 3f878c170a4c79a4a07f6e4a66994462fca685c3 SHA-256: d702ff42660d8e64547824bc8ea600c07dc53c30b953a32cf4c12fd6595ab67d
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS uploads or link farms on disposable hosting. ClamAV and ML classifiers strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is a primary indicator of malicious activity within the PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

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://anandtouristcorporation.com/uploads/86733764154.pdf
    • http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/dul9016cb9dmjre3572qipkbp5/zipidotumaneparebunur.pdf
    • https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/19orgaej733nuc2ssjv1487vnl/xonenorodiwazazogovive.pdf
    • https://www.wflorlando.com/wp-content/plugins/super-forms/uploads/php/files/be5f1b1dcbedb2b613d41a0a4c02d9dd/kigipupebifu.pdf
    • http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160765d5142aa1---towukefetuxefabot.pdf
    • http://thefjordbaklawfirm.com/clients/876731/File/xavomor.pdf
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608ad4321bc78---mofaluvifubejagobe.pdf
    • http://sungsam.net/userData/board/file/kogadezisav.pdf
    • http://yuanjen.com/ckfinder/userfiles/files/delizodatajigupilez.pdf
    • http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/16081fea2224af---4103140531.pdf
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075c65a9942d---4982439546.pdf
    • https://juniorclublivorno.com/sitonews/images_upload/files/96817545403.pdf
    • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a1051b0b40---bekokakojaboxegabexo.pdf
    • http://lovelyspa.net/ckfinder/userfiles/files/10378898540.pdf
    • https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b93395caf04---54376435609.pdf
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608687e927701---39318965041.pdf
    • http://mploa.com/clients/2/2c/2ccb326c3583e393996f575e36ee3974/File/52125950391.pdf
    • https://minervatech.work/js/ckfinder/userfiles/files/81325217614.pdf
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071aba865dba---48784962975.pdf
    • http://xn--80aatg4aaaddkhfhbf3evf.xn--p1ai/ckfinder/userfiles/files/18398083324.pdf
    • http://waterlootour.com/FileData/ckfinder/files/20210623_41888CCFF1EF9AB0.pdf
    • https://wcdt.co.th/wp-content/plugins/super-forms/uploads/php/files/vkkecfa1tlahu4dvf0vi1a16n0/gelibuvivapepawesamaluri.pdf
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160abd8e82a274---wewobejotifanavoxuxaweras.pdf
    • http://nutranghongngoc.com/media/ftp/file/zulovu.pdf
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609790fc9d5f2---wemuzinuvelakamegase.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=square+numbers+list+up+to+100
    • 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_off000132b4.bin
a2a1608157de250a5dd6f7679237ec4099c07f98897a51ca48751723f8f8904b
pdf-font-stream PDF embedded font (sfnt) at offset 0x132B4 17064 bytes
font_01_sfnt_off00015f27.bin
97c9333ae2cd9a8c6ff420a8caadee9486116aafab36223e53cbc326d07f1a2e
pdf-font-stream PDF embedded font (sfnt) at offset 0x15F27 11048 bytes
font_02_sfnt_off0001789c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1789C 16792 bytes