Malicious PDF — malware analysis report

Static analysis result for SHA-256 32fcfa0ed3330ffe…

MALICIOUS

PDF

84.8 KB Created: 2021-09-17 13:02:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 38287f6145cf94f9371d7e0b7eabe0ab SHA-1: 576fa36ffae6711683004da2cd91528847c78a31 SHA-256: 32fcfa0ed3330ffe0cb11f29877807205b2aba0e03e9ff13ef12e347bf26085e
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS upload directories or are part of a link farm hosted on disposable domains. The embedded JavaScript likely facilitates the redirection to these malicious sites, which are used to distribute further malware or conduct phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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 https://garglob.ru/uplcv?utm_term=the+body+coach+app+android PDF link annotation
    • https://nguoixunghekiev.vn/userfiles/file/vonexufuxumazoliroreruger.pdfIn PDF document text
    • http://pilanatofishing.com/home/sandbox/domains/shelter.sandbox.tritek.hk/public_html/ckfinder/userfiles/files/79461258903.pdfIn PDF document text
    • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/276f2a7674237e2fd9b2dcb73ffc3f07/89670725206.pdfIn PDF document text
    • https://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/16141146b94be7---66760744776.pdfIn PDF document text
    • http://zeguvietnam.com/uploads/ckfinder/files/sipawetojibojeg.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16137508eb61ab---kazisupunemiwafotexajep.pdfIn PDF document text
    • http://muntepa.com/userfiles/files/82270569601.pdfIn PDF document text
    • http://palazzodiaz.com/userfiles/files/vujuluget.pdfIn PDF document text
    • http://www.tobywells.org/media/fckdir/file/21446641955.pdfIn PDF document text
    • http://cps-mbstu.edu.bd/app/webroot/js/ckfinder/userfiles/files/35329597159.pdfIn PDF document text
    • https://shivajigrihnirman.com/singhania/downloads/file/11869605358.pdfIn PDF document text
    • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/1cf7c0471f96e9630f2cbc3a75f5f463/85097928461.pdfIn PDF document text
    • https://www.prshots.com/ckfinder/userfiles/files/tunegeneluxa.pdfIn PDF document text
    • http://sklenicky-obchod.cz/web/admin/fckeditor/userfiles/file/visepefefabiru.pdfIn PDF document text
    • https://profession-your-dr.com/uploads/files/202109012251297151.pdfIn PDF document text
    • https://sjamsul-hidajat.id/ck_uploads/uploads/files/juzafuli.pdfIn PDF document text
    • http://seattledesis.com/fckeditor/file/87971112495.pdfIn PDF document text
    • http://fiorenzuolatrack.it/userfiles/files/76249701260.pdfIn PDF document text
    • http://alpinist.store/sribati/editor/uploadfiles/16319008164.pdfIn PDF document text
    • https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/ce24db1992feb854825b997de892c777/wegaboviti.pdfIn PDF document text
    • http://lactopad.com/uploads/files/lodaruvumasa.pdfIn PDF document text
    • http://tekizolasyon.com/ckfinder/userfiles/files/53740653548.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_off0000e99f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE99F 17380 bytes
SHA-256: 0ac024d496bc4b2cf14517204d7955a09613f5f8f6cab27cc3433f6d206487b2
font_01_sfnt_off0001167c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1167C 10516 bytes
SHA-256: ede569af700483411b236a2ceaa27c4bf39eeb7f049d028758b0cbdcd9c8f569
font_02_sfnt_off00012e16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E16 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.