Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed9d0615a1af4d15…

MALICIOUS

PDF

89.5 KB Created: 2021-09-03 03:45:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 624e44297a4ffa6e14e8523495101240 SHA-1: c582b131b233f6eab2b288ea68b484756bed20eb SHA-256: ed9d0615a1af4d15d4d99f29b81c8d4cfc4e5b5d0b861fae442014506ca7ea73
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable hosting, indicating a link farm designed to lure users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. The presence of a 'download button' heuristic further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://cradlegold.com/wp-content/plugins/super-forms/uploads/php/files/gk3ve28n8h85s4tds9stqa1uqq/6969180577.pdf In PDF document text
    • https://beautyyaurient.com/editor_upload/file/xofaxajeg.pdfIn PDF document text
    • http://alhouti.com/userfiles/file/firejituzow.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608ce1af4b1ae---93214120896.pdfIn PDF document text
    • http://mediacast.vn/ckeditor/upload/files/fatan.pdfIn PDF document text
    • http://autowassenindex.nl/images/uploads/sajabot.pdfIn PDF document text
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a21fa261e3c---xawilujurinuja.pdfIn PDF document text
    • http://studioingegneriavaragnolo.com/userfiles/files/22566907573.pdfIn PDF document text
    • https://sayurhijau.com/contents//files/tazoralabagoperex.pdfIn PDF document text
    • http://forumts.com/ckfinder/userfiles/files/xupewegarugaduvut.pdfIn PDF document text
    • https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/1607ec5f49eb08---fenefusasurokinaxi.pdfIn PDF document text
    • https://gmt-tw.com/app/webroot/userfiles/files/watifowuvume.pdfIn PDF document text
    • https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/e3f86af20ddb2c5e2a6e333e508cbb03/42262729175.pdfIn PDF document text
    • http://songiadahoaian.com/upload/ck/files/51807605057.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fb48635fcb7---ponudoja.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/e5tb7ugmnitmkpgr93rvf6ikvo/50689841154.pdfIn PDF document text
    • https://festacontinua.it/public/file/22383467489.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075c9f8bee53---raxuxowalowapimukoga.pdfIn PDF document text
    • https://shinaltd.ru/images/file/movesoja.pdfIn PDF document text
    • http://agriturismofattorialucciano.it/ckfinder/userfiles/files/97853051540.pdfIn PDF document text
    • https://arrad.ch/modules/ck/ckfinder/userfiles/files/bunosivuvipijov.pdfIn PDF document text
    • http://odumakus.com/uploads/files/22826067624.pdfIn PDF document text
    • https://rozgarnetwork.com/ckfinder/userfiles/files/judizuduxuxanegof.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=galaxy+earbuds+manualPDF link annotation
    • https://mediaget.com/userfiles/files/63453239402.pdfIn PDF document text
    • 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E9 10592 bytes
SHA-256: 96fd0a4b85e8f82dc9534554bb3dfc5094a6e0acd32d614ee5a9e4f56f652fc3
font_01_sfnt_off00010f1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F1B 18920 bytes
SHA-256: dfd922d4dc2eee6194a6443cd51c48cc6796988736414683739ec0aaa0f3dc46
font_02_sfnt_off0001402f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1402F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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