Malicious PDF — malware analysis report

Static analysis result for SHA-256 0294d606ee6d99fa…

MALICIOUS

PDF

78.2 KB Created: 2021-09-03 15:11:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 87f6a71541f7c0e8733d341b7db73e7c SHA-1: c7333b9d6cecd3312bc8ac3e3bf6faeeff2a42ab SHA-256: 0294d606ee6d99faf315178e2560fe3a8c9ce52bdc2fdd786c8029b2a74030e3
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to compromised WordPress uploads, suggesting an attempt to host malicious content or redirect users. The presence of a 'download button' heuristic further supports a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://pixomot.ru/uplcv?utm_term=psychonaut+field+manual PDF link annotation
    • http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16075b528525ed---kifinozesowexotovozelive.pdfIn PDF document text
    • https://vietnaminsight.biz/ckfinder/userfiles/files/47494925753.pdfIn PDF document text
    • http://euro-ex.com/images/blog//file/bezarajelavitulejoves.pdfIn PDF document text
    • http://ccshecea.org/upload/files/66692129691.pdfIn PDF document text
    • http://bitite.lv/media/txt/122/file/103030522.pdfIn PDF document text
    • http://bronia.org/userfiles/file/vamosumonuzemavasum.pdfIn PDF document text
    • http://udmvdpo.ru/images/files/30378332248.pdfIn PDF document text
    • http://rockghs1965.com/clients/8/8c/8c68d0bbb6adb8fad5f76254a0516489/File/kutebosowowitupa.pdfIn PDF document text
    • http://sbox-technology.com/upload/datoteke/zapir.pdfIn PDF document text
    • https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/om733g2kdpiksp1v2fn1d5a0c6/57040901116.pdfIn PDF document text
    • https://giorgiosantinelli.it/file/gavadojibuka.pdfIn PDF document text
    • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/gspm40sunbi6d9s8r28re20e5b/rinevapabunazolefebenab.pdfIn PDF document text
    • https://balaji-technology.com/userfiles/file/dukalaworumarudapaxu.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/aqseerii9996urisfcu51ut8m3/zojovefirupegova.pdfIn PDF document text
    • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/athokvvvicpg5gj6nmde75jspm/memejurorurezoxigatu.pdfIn PDF document text
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609ccb211fb20---25370560927.pdfIn PDF document text
    • http://zjleiou.com/images/upload/File/68038864892.pdfIn PDF document text
    • http://aftckwt.com/uploads/file/88863108620.pdfIn PDF document text
    • http://xedaphcm.com/luutru/files/melavizav.pdfIn PDF document text
    • http://cuboni.com/uploadfile/hong202108110633209278.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_off0000cc34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC34 10856 bytes
SHA-256: d6f379f6888772192633d5d0256fae7cfef85ed6f8efef25d6f33b4b78551612
font_01_sfnt_off0000e521.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE521 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fd33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD33 17484 bytes
SHA-256: a292b92bd44b2b15ed26517e918f150e00f6ff7f19f94f8a85cf1da0c5cdc2ff