Malicious PDF — malware analysis report

Static analysis result for SHA-256 330a89d34f78a08c…

MALICIOUS

PDF

85.3 KB Created: 2021-09-08 01:30:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: f3d8701234867e47c8341348c597e02d SHA-1: 91fc91fe73a4d94be32920c409a5489546ac8104 SHA-256: 330a89d34f78a08cc91ab1187855da7f2bf0134bb36f411d951b128bae8524d7
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous links pointing to compromised websites and disposable hosting, suggesting a phishing or malware distribution campaign. The file's structure and embedded links align with techniques used to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9849

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=international+relations+the+world+community+in+transition+pdf+free+download PDF link annotation
    • http://voszveszprem.hu/_user/file/fezilexivetotijatagena.pdfIn PDF document text
    • https://hmanagement.net/userfiles/file/tiferojuzitisar.pdfIn PDF document text
    • http://lhs75aa.org/clients/0/08/08eb77d093c5251d787cf05842b4a73c/File/89541435441.pdfIn PDF document text
    • http://altinay-law.com/images/file/jaxajebasonekuguzuviraduz.pdfIn PDF document text
    • http://interstyle.org/content/xuploadimages/file/posofufi.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/a8f07f5d104025effd911702ebce17d7/52885691558.pdfIn PDF document text
    • http://tdvvietnam.vn/webroot/img/files/motesosubupobomox.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160820d4c15f19---47469842755.pdfIn PDF document text
    • http://www.cerel.eu/images/wyswig_images/file/85779492593.pdfIn PDF document text
    • http://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/lotexabez.pdfIn PDF document text
    • https://spectrumohio.com/wp-content/plugins/super-forms/uploads/php/files/a093821fa814c8c240a5eddc0b112c70/texuributifowelutifujek.pdfIn PDF document text
    • https://drmiamiconnect.com/wp-content/plugins/super-forms/uploads/php/files/e60bb92e35a24e8b83a340b617c37ddd/godanived.pdfIn PDF document text
    • http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160965a5081acf---potiwigajur.pdfIn PDF document text
    • https://cnn-logistics.com/asset/files/lokikesitazewalazupaledo.pdfIn PDF document text
    • https://jdrum-music.com/uploads/ckfiles/files/18083145122.pdfIn PDF document text
    • http://ferrogep99.hu/static/media/file/1469409191.pdfIn PDF document text
    • https://www.harasportcenter.com/wp-content/plugins/super-forms/uploads/php/files/q5cbk0es536ah3uc5o54utrrc8/rozekuzobikedixejupe.pdfIn PDF document text
    • http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/160773926d339c---98447757686.pdfIn PDF document text
    • http://broadmoor77.com/clients/39738/File/dubuzubawapitavozovozige.pdfIn PDF document text
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16111c8642aa72---salerojivejazibazo.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/0a001c37234596801557cca7ed6c0ab3/jasozavusudegofuzem.pdfIn PDF document text
    • https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/5e013de138d523e05a723785e7f4465c/27354658598.pdfIn PDF document text
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/e3d99f6bd9dcfd918dbc238fe10ce7a1/86482222243.pdfIn PDF document text
    • http://palazzodiaz.com/userfiles/files/45214413782.pdfIn PDF document text
    • https://jclifeschools.org/wp-content/plugins/super-forms/uploads/php/files/c6c02a73e5387458922ce96af11e9b7b/vafejefanede.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612185d7c235f---fugegeputawerubu.pdfIn PDF document text
    • http://bukvoznaika.ru/ckfinder/userfiles/files/fujozuronirarafaxez.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_off0000e49d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE49D 18412 bytes
SHA-256: abcc7ecac51490392ab64b1c1237ae26bf628b482c899886fc93ba520ea21f83
font_01_sfnt_off0001148c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1148C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012ca3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CA3 11136 bytes
SHA-256: faa0ff8aef8401d03984c1e4695ee6cecbf5b0021db2c72c13499bb3f73b6564