Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dcb315cd85d9cfd…

MALICIOUS

PDF

77.1 KB Created: 2021-09-04 21:53:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 7abf5b7c905be0672ba0d782c41871e6 SHA-1: f312203b5ad08015418469c5fc6724910946443f SHA-256: 2dcb315cd85d9cfde93d2a0de52e2dbdb4b7b4d0d0600ce2b1fd10a08fb0c503
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a link farm pointing to numerous external websites, many hosted on compromised CMS platforms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded URLs suggest a tactic of using disposable or compromised hosting to obscure the ultimate destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 6

  • 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.
  • 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=lectrosonics+smqv+pdf PDF link annotation
    • http://wsp.pl/userfiles/file/13856947535.pdfIn PDF document text
    • http://ovartec.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076041856a99---64570462138.pdfIn PDF document text
    • https://lifecareproduct.in/ckfinder/userfiles/files/saxabakotovobevolur.pdfIn PDF document text
    • https://blueparadise.pl/userfiles/file/fuvosirakiwuvug.pdfIn PDF document text
    • https://frontiersneurophotonics.org/wp-content/plugins/formcraft/file-upload/server/content/files/1/16080c4d11cd46---23688912966.pdfIn PDF document text
    • http://drlalashow.com/php/billboard/uploads/file/pogaxuvituvabusonewunibi.pdfIn PDF document text
    • https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/624223a32681e67d364eeaea8f5d5419/woxiwutumodurago.pdfIn PDF document text
    • https://gulfb2b.com/userfiles/file/bowumipat.pdfIn PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070e3b7c46f3---tefidisirosaxupebesusawe.pdfIn PDF document text
    • https://vegas-shop.net/uploads/files/nepuwajuzewodufajeta.pdfIn PDF document text
    • https://canadianrelocation.net/wp-content/plugins/formcraft/file-upload/server/content/files/160823fd56799b---reviketa.pdfIn PDF document text
    • http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/160741e18ea1b9---zukidomudotukafi.pdfIn PDF document text
    • https://www.lenoir-elec.com/wp-content/plugins/super-forms/uploads/php/files/1aqepm01r244kulhmla1l20g04/tezunux.pdfIn PDF document text
    • http://agierresrl.it/userfiles/files/86463175041.pdfIn PDF document text
    • https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/gfeqrquvsct8r6tplh0ofj77s9/razesenafedifem.pdfIn PDF document text
    • https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/a1da52bff36823723c96eacf87991c89/65713803047.pdfIn PDF document text
    • http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/160bae4ce11e9e---nebit.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/6i9hep5qovh09uld6tpi9l8nf7/91728560387.pdfIn PDF document text
    • http://alburigiott.it/userfiles/files/jawimepabofomigido.pdfIn PDF document text
    • http://cuatudongnhatrang.com/uploads/files/62919772832.pdfIn PDF document text
    • https://webmenuplus.com/images/file/kutodado.pdfIn PDF document text
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/16085747baf2c2---kavazipe.pdfIn PDF document text
    • http://animationcoach.com/userfiles/file/pozopumadiwipepawiwufa.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_off0000c7ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7EA 17648 bytes
SHA-256: ec55d6b1ebb6c62c1326a0673ae95fe85a36197775c2dc60a54fe96b86603901
font_01_sfnt_off0000f62a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF62A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010e41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E41 10740 bytes
SHA-256: c669e5071dcb3ec58e3a2b3c1f7ad8dba8de88062ea7686b9eecb278b00c6379

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