Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a214f2b5f88146a…

MALICIOUS

PDF

93.2 KB Created: 2021-06-27 23:25:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 3620adfbf76a503d1de5da0e7a103d80 SHA-1: 5ee9ea7c163e35627aafaa03b415491fc4535b30 SHA-256: 9a214f2b5f88146adbfc5ac89540f348a7153ffde84e2ec8f719be4ea87b52eb
176 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://synerhu.ru/uplcv?utm_term=all+formulas+of+magnetism+class+12 PDF link annotation
    • https://giustofiori.it/file/51022458239.pdfIn PDF document text
    • http://28777886.com/Lpf/UPFILE/userfiles/files/11007360109.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7ac9380d5a---39669886853.pdfIn PDF document text
    • https://aarhuskortet.dk/images/file/jimutedetitavoluxodajela.pdfIn PDF document text
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/2cc6bp5kvjdq5kumovm2j84d43/37810350551.pdfIn PDF document text
    • http://ingenermarket.ru/userfiles/25124038241.pdfIn PDF document text
    • http://rusiuojigalvoji.lt/wp-content/plugins/formcraft/file-upload/server/content/files/16087554c23354---77083304147.pdfIn PDF document text
    • http://www.sbawerribee.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca1ddef82a---60580740599.pdfIn PDF document text
    • http://bitite.lv/media/txt/122/file/88431640614.pdfIn PDF document text
    • https://ajwatravel.com/wheelmarine/userfiles/file/wovulo.pdfIn PDF document text
    • http://stylist.in.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1607b3d3a93a58---21345378277.pdfIn PDF document text
    • https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/9f7f5dd6cab8a430606efed892e83416/samirorumipuxupafesul.pdfIn PDF document text
    • http://opakowania-loga.pl/zdjecia/fotki/file/mosejufodanajuzuk.pdfIn PDF document text
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086c42501062---xamakikidikivigosekuvas.pdfIn PDF document text
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/amhellkvjqfc559523trmoa5f3/natifeguranalimubogo.pdfIn PDF document text
    • https://zlatartopalovic.rs//files/91998288458.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/160a4a104a763e---rikanarule.pdfIn PDF document text
    • http://gesundezellen.de/neu/userfiles/file/fazabegixovitu.pdfIn PDF document text
    • http://mtprospectbaptist.org/clients/7/74/74f10a8404da00fab064704771972c19/File/25867668983.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608d57d17c7be---nubijitasof.pdfIn PDF document text
    • https://www.brightfieldbusinesshub.co.uk/wp-content/plugins/super-forms/uploads/php/files/k5vtp5osfolsr3bp681a2h4boe/92659112698.pdfIn PDF document text
    • http://aodaibooking.com/FileData/ckfinder/files/20210606_F9672622583BA224.pdfIn PDF document text
    • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/be6u4ntqor4m6u5m1ij9s31d25/tozojawepujubozurodeper.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/1606ceb6124aed---48114209500.pdfPDF link annotation
    • http://flooroverstock.com/admin/userfiles/file/maxojij.pdfIn PDF document text
    • http://henri-ruch.ch/doc_pub/file/godibati.pdfIn PDF document text
    • https://watertorens.nluserfiles/file/25257865653.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE1F 10932 bytes
SHA-256: 294c43b5e6eef8385b77d3f8b6bbb6efb8a87b272f7dff6317dfec44da6920d5
font_01_sfnt_off00010797.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10797 18752 bytes
SHA-256: a23ac1d3afeee78a882bb36ab2ff3a514d86cbf20324d53abdb01e70832eeaf2
font_02_sfnt_off0001395d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1395D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off0001516e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1516E 16088 bytes
SHA-256: 450eea5fc67953cc3bdc764260aa6f1739571c17331c9588074966c3dbef4c6c

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