Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2adc6aa99dc9742…

MALICIOUS

PDF

83.9 KB Created: 2021-07-06 16:24:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: d1e0d83072fac9d4ec423c4f948aea19 SHA-1: af9b2a5c7c6c5c8553f52e2a6fb8994cf3aa531d SHA-256: d2adc6aa99dc9742f065ceaf9c7cf9e6aaede284e86cde1346eaa9589b14a522
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting a link farm designed to redirect users. The 'request for quotation' theme in one URL indicates a potential lure for phishing or further malicious activity. While no scripts were explicitly extracted, the PDF structure and numerous external links strongly suggest it's part of a campaign to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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://drsubhashawale.com/ckfinder/userfiles/files/kajizakuvimowes.pdf In PDF document text
    • http://esrafisek.com/images_upload/files/bifetanijewujonawi.pdfIn PDF document text
    • https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160b7cefd7ce8d---23829386112.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb74f1192ab---63797703907.pdfIn PDF document text
    • https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c17e10e4c45---jevoradopunikijasu.pdfIn PDF document text
    • http://outspokenholland.com/userfiles/fckFile/20210516095310.pdfIn PDF document text
    • http://ebsenglish.net/_UploadFile/Images/file/82169079246.pdfIn PDF document text
    • http://aelma.com/sites/default/userfiles/file/mepegususoxozivebaxet.pdfIn PDF document text
    • https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af98c0001a2---xibiduworababanekoso.pdfIn PDF document text
    • http://makesrealsense.com/ckfinder/userfiles/files/22686448705.pdfIn PDF document text
    • https://inchirierielicopter.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16097e0d1bda43---sevalasosoboronuvotali.pdfIn PDF document text
    • http://www.zulfugar.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609415c9db9c9---92173868911.pdfIn PDF document text
    • https://eyestech.in/wp-content/plugins/super-forms/uploads/php/files/o1oh37kfgq3hree63u7doao88r/39245146292.pdfIn PDF document text
    • http://amexeuro.com/an3_Uploads/file/rapexuvogepiteriwadobilak.pdfIn PDF document text
    • https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/82d4c46314ca345e0bc6e985fa773cb5/rigidowedogutere.pdfIn PDF document text
    • http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/16075461a562c4---tevef.pdfIn PDF document text
    • https://www.opdrrustukalac.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e5f02e59c5---nedamukexibexigasotugutot.pdfIn PDF document text
    • http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/160abdd629815d---vivefufeburutizuzofoz.pdfIn PDF document text
    • http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b82b6618583---69587731332.pdfIn PDF document text
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/7642b009cb2642790a1c9662a3c8f498/kovaxawokifege.pdfIn PDF document text
    • http://ebsenglish.net/_UploadFile/Images/file/42254930779.pdfIn PDF document text
    • http://glina-master.ru/admin/ckfinder/userfiles/files/kufefogi.pdfIn PDF document text
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfa6db46ef5---janapinijawika.pdfIn PDF document text
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/1cbd083c57f89f0a637a1674d28c5d8a/diroruvezopawifuzudivi.pdfIn PDF document text
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608064eb26407---91744667604.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=request+for+quotation+in+procurementPDF link annotation
    • 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_off0000e200.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE200 17332 bytes
SHA-256: 097518bafb8b0dbdb5e6c70124611342981dd372c17717fa678d24d732d9ad20
font_01_sfnt_off00010f6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F6B 10884 bytes
SHA-256: 712e903b2792d61ede77ce0e52d5cb729c030791e996a08e88fe67f15e0d33cb
font_02_sfnt_off0001289c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1289C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1