Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd4066e94cb25e0c…

MALICIOUS

PDF

92.1 KB Created: 2021-09-09 06:09:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: b885868ad265784f02164d2e1d8fdabe SHA-1: 717b9940eac3414231d878418a2d0cec9dd0811f SHA-256: dd4066e94cb25e0cb2c2000f1399d6bd8f06ccadf631f1148012747fa1089439
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF file was flagged by multiple heuristics as malicious, including a high ML score and ClamAV detection as a phishing trojan. It contains a link farm pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to redirect users to malicious sites. The document body is unreadable, but the presence of numerous URLs indicates a likely phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9913

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 http://dnt-mayak.ru/content/File/popekuweda.pdf In PDF document text
    • http://vendsol.com/userfiles/file/51564811984.pdfIn PDF document text
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/c8dd135e3e49fae687b56fa8e6aabd84/netorotutijipafilu.pdfIn PDF document text
    • https://www.luxboss.com/ckfinder/userfiles/files/kudadekisazuximube.pdfIn PDF document text
    • http://soft-pro.hr/upload/datoteke/demabemisoduzudur.pdfIn PDF document text
    • http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/16133adc5acd7d---degiwefimidugebojubakota.pdfIn PDF document text
    • https://tinnituskozpont.hu/files/karekiwovusaro.pdfIn PDF document text
    • http://asiavent.com/UserFiles/file///40763191680.pdfIn PDF document text
    • https://cottingham-group.com/cufiles/files/94720666456.pdfIn PDF document text
    • http://otelm4b.ru/admin/ckfinder/userfiles/files/vekuvigelasuras.pdfIn PDF document text
    • http://www.verneteco.com/ckfinder/userfiles/files/sogageduxo.pdfIn PDF document text
    • http://nikkenj.com/userfiles/file/tanovu.pdfIn PDF document text
    • http://lighthouse-connection.at/myPix/file/bovotinojukupunarekilaki.pdfIn PDF document text
    • https://lifesmart.ro/ckfinder/userfiles/files/87046619539.pdfIn PDF document text
    • https://sportnazona.bg/f/uploads/files/tojemebuloroj.pdfIn PDF document text
    • https://f27szerviz.hu/upload/files/61567744304.pdfIn PDF document text
    • https://dakhoathienhoa.net/images/files/daxelesonerowisos.pdfIn PDF document text
    • https://izr.fr/files/dofegiputonusox.pdfIn PDF document text
    • https://ostrichpharmaceuticals.com/userfiles/file/96010390347.pdfIn PDF document text
    • http://ardeche.proximeo.com/ckfinder/userfiles/files/fukavexuvofegupemewukekuz.pdfIn PDF document text
    • http://baoveantam.info/upload/files/8060512540.pdfIn PDF document text
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/161382f698d15a---93818301674.pdfIn PDF document text
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16132bb83bba8c---tejufekijoxusokupav.pdfIn PDF document text
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137eb9f8628d---83129691178.pdfIn PDF document text
    • https://byocamacho.com/ckfinder/userfiles/files/54019172178.pdfIn PDF document text
    • https://metrosecuritynepal.com/assets/userfiles/files/gosab.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=mi+tv+stick+vs+amazon+fire+stick+litePDF 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_off0000fde1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDE1 10708 bytes
SHA-256: d977795c13fa8e9891a6279ec46fd89e27d1dd9b999a2bdc7e15bab2b4514c6b
font_01_sfnt_off00011691.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11691 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012ea3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EA3 19636 bytes
SHA-256: c721febcc4b88c094ffbdacb921c5e64e499b960005a52bbc8cc853f7dbed227

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