Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f90b4a66c6ef86f…

MALICIOUS

PDF

96.1 KB Created: 2021-07-23 08:25:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: e0b28ab531c92b5526e280a9a947052f SHA-1: 60a3e4fcbf7e2e1d5674b608c3adbff85dcda75b SHA-256: 6f90b4a66c6ef86f46ed4690166429afd651f2962933d05337e7c530d2fbdfe3
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating a high probability of maliciousness. The document contains a link farm with numerous URLs pointing to potentially compromised WordPress upload storage and disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of these links and the overall structure strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://bscartridge.com/pic/mimubikifaxaken.pdf In PDF document text
    • https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/upvq7v2qpa8pjevk902vcp10n8/fevatuwiv.pdfIn PDF document text
    • http://hanleyresources.com/images/82777616498.pdfIn PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a38b07ec7f0---lumazigunabefajixizalov.pdfIn PDF document text
    • http://auxerretv.com/content/public/file/29272212988.pdfIn PDF document text
    • http://hyperasp.net/userfiles/file/zofozuxigefapilededowuwim.pdfIn PDF document text
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/160a645480a7b8---musavafaborire.pdfIn PDF document text
    • https://amblamy.ee/upload/file/5747962146.pdfIn PDF document text
    • http://kargiskola.ge/myadmin/ckeditor/ckfinder/userfiles/files/todetujazitifa.pdfIn PDF document text
    • http://ascensionchina.com/userfiles/file/zepemasuvot.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f274fd3db4e---zisiriliwu.pdfIn PDF document text
    • http://toyotarentcar.net/FileData/ckfinder/files/20210702_2BF0F2E1E7A56B24.pdfIn PDF document text
    • https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/ooa12cch9njsvacu33etl0q48r/rovozilidukalaxum.pdfIn PDF document text
    • https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/elsfaj3egmhvkqoenijrubqnbb/kulamuxijasetemesafimidek.pdfIn PDF document text
    • http://redwoodpwr.com/wp-content/plugins/super-forms/uploads/php/files/i3fr0g0186087ufg3f1ih5afl4/61319210574.pdfIn PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608031484181e---delab.pdfIn PDF document text
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/9q35vqc3do1p2o56f2mqddv186/3235032690.pdfIn PDF document text
    • http://wirheiraten.de/images/file/44446421480.pdfIn PDF document text
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/aae170bc79dfa2288dc3947fecdf809e/zokinokefibep.pdfIn PDF document text
    • http://sahamit.net/userfiles/file/nomosakas.pdfIn PDF document text
    • http://phs1961.com/clients/2/29/29da8dc1278d8f1c58a3d16208bcb4e7/File/xowuligaj.pdfIn PDF document text
    • https://smilepath.com.au/wp-content/plugins/super-forms/uploads/php/files/d532045f17dedd12abac045d24322272/tatefokopufedagezobixeg.pdfIn PDF document text
    • http://studiomistretta.com/userfiles/files/23195225177.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=persona+4+dogmatic+towerPDF 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_off00011378.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11378 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012b8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B8F 10832 bytes
SHA-256: f89b5d7265aa255a4483ee87bd9b113a2f249467fcd8691db70e78e1b964ef4a
font_02_sfnt_off00014479.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14479 17444 bytes
SHA-256: 74a975516ab3fff5398fd231966941e4d366df1907b0109f79ad8ad8928eb427

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