Malicious PDF — malware analysis report

Static analysis result for SHA-256 30891b86b77ab182…

MALICIOUS

PDF

93.4 KB Created: 2021-08-09 01:51:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: d6dc0b1b0889b58ed51b51582c4f4d78 SHA-1: eab9451a15c084e44cf2c379d46eff39de97d07f SHA-256: 30891b86b77ab182a63f6ce99244757920f7720dc4aa7aef0cd35e5997117fe9
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1539 Steal or Forge Credentials

The PDF contains numerous links to external sites, many of which are hosted on compromised CMS platforms or disposable hosting, suggesting a link farm for phishing. The 'SE_MFA_LURE' heuristic specifically indicates the document is designed to harvest credentials by impersonating MFA prompts or one-time code requests. ClamAV also detected this file as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9876

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/b892120516b126a0c959dd2bab6ae8a2/lakivojejojes.pdf In PDF document text
    • http://blankheich.de/images/uploads/file/gosajudi.pdfIn PDF document text
    • http://jshanwoo.com/ckfinder/userfiles/files/91047104453.pdfIn PDF document text
    • http://vytvarnyobchod.cz/UserFiles/File/zilifeminabufe.pdfIn PDF document text
    • https://airshow-bg.com/file/kikosavel.pdfIn PDF document text
    • http://bsbcarpet.com/userfiles/file/14446909378.pdfIn PDF document text
    • https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/3hrtc48sm7l33bnj5i7820n8od/79259694203.pdfIn PDF document text
    • https://amirep.com/wp-content/plugins/super-forms/uploads/php/files/79a97a4eb1c297170ce3eece2050991e/dovikurevogotubimudoware.pdfIn PDF document text
    • http://www.aqsclimited.com/EditorImages/file/88391393622.pdfIn PDF document text
    • https://www.glasswindowequipment.com/wp-content/plugins/super-forms/uploads/php/files/2d34efdc05aedbd665ff3d732fe230e2/vunivijulozox.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/59724f282d00977a6ce2cdb991ebbb4b/16287665867.pdfIn PDF document text
    • http://mextro.de/upload/files/99014203650.pdfIn PDF document text
    • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/a9d32f3713fd02c3a06ea649a22ee049/23198736617.pdfIn PDF document text
    • http://fly.no1-yes.com/userfiles/file/vexidipabipotetiwubinose.pdfIn PDF document text
    • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8115bdde76---zowuvakokinamivol.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160a9b0ea563a7---94038897610.pdfIn PDF document text
    • https://boucherienabli.com/uploads/FCK_files/file/63335659492.pdfIn PDF document text
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160d0684cb7141---27622276201.pdfIn PDF document text
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e041d9ecc0c---tojofivoviwonegulin.pdfIn PDF document text
    • http://mitsubishilongbien.vn/images/ckeditor/files/pamolixorawas.pdfIn PDF document text
    • https://asaptransfers.co.uk/wp-content/plugins/super-forms/uploads/php/files/ei3qg6f69ge0cuqdu5irg81dq1/bigam.pdfIn PDF document text
    • http://superbarter.sk/media/file/89881663380.pdfIn PDF document text
    • https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/16084006e146fa---kitovekodijizevami.pdfIn PDF document text
    • http://holidayservicemarsala.it/userfiles/files/peduto.pdfIn PDF document text
    • https://lightingsystemscol.com/wp-content/plugins/super-forms/uploads/php/files/162cb640530ff659bbaf840e3c9dbcbe/ruliwoxigipafakodok.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=how+to+fill+out+unemployment+form+californiaPDF link annotation
    • https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/348992d9d597a9fd0145b031b8843d38/jabazivenosajuwigub.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_off000107e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107E0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011ff7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FF7 10764 bytes
SHA-256: 4db65c42646dd3e015efa5ac1d52d31455815dcaeeacc350b855619d074e3c3f
font_02_sfnt_off000138b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138B4 17292 bytes
SHA-256: ef5e59d461b1ecdc9d430e2b258fc0ef3d932c0c42a27e3c1d983c5979583c0b

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