Malicious PDF — malware analysis report

Static analysis result for SHA-256 178254ff25d62aca…

MALICIOUS

PDF

93.6 KB Created: 2021-07-05 16:44:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 94d503da2f1b05da9b81d0004a7b8432 SHA-1: 5495ae5fea85148c5e2f86481bf4378b292ee6ae SHA-256: 178254ff25d62aca8b4e2760dac2978d081eda630e7845ad2473e93728904ade
156 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the heuristic firing for 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly indicate a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9927

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://crewmak.ru/uplcv?utm_term=gta+vc+android PDF link annotation
    • http://shepardfarm.com/clients/877021/File/wixizewimosikojibedumof.pdfIn PDF document text
    • https://ankaratemizlikcim.com/depo/sayfaresim/file/4836424606.pdfIn PDF document text
    • https://sasalidayanisma.org/uploads/file/62006598664.pdfIn PDF document text
    • http://berbun.com/user_img/file/jibobuken.pdfIn PDF document text
    • http://alacarte-design.de/userfiles/file/xidafuwafuwumisajeji.pdfIn PDF document text
    • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/837788558e88c20825b91e109f992324/fizozaruxakojikufoxor.pdfIn PDF document text
    • https://www.prestigeautobody.com.au/wp-content/plugins/super-forms/uploads/php/files/80bccb23fdf854a7668431344f5b107c/jududiwodiforidar.pdfIn PDF document text
    • http://glotecgh.com/upload/editor/file/97292191404.pdfIn PDF document text
    • http://www.mywil.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607e0e762efe5---92824831412.pdfIn PDF document text
    • https://communeouchamps.fr/userfiles/file/zetikejegonelinadi.pdfIn PDF document text
    • https://aartipalette.com/userfiles/file/5926140751.pdfIn PDF document text
    • https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608411457fde9---pimazidutetatusulemu.pdfIn PDF document text
    • http://mulroyenvironmental.ie/userfiles/file/47937606430.pdfIn PDF document text
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608075429e15e---ranozonixekojumage.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1fd18b4de8---fufupevezenagewawusi.pdfIn PDF document text
    • http://dogoducthien.com/uploads/files/wexedevu.pdfIn PDF document text
    • http://cityhelps.org/clients/6/61/61afa7a028a8e04f14432b0fece6f2b0/File/90415170279.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160811874579bb---69865108426.pdfIn PDF document text
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5520573c32---87535493848.pdfIn PDF document text
    • https://apexforestservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160774f332b664---97545184536.pdfIn PDF document text
    • http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/16094a1f60898f---jabumiwobinivekida.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c779a9a6e05---pusog.pdfIn PDF document text
    • https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/7316c7c84f380ebb0202526637a100a3/nafuranijuguvusagapowez.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f34e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF34E 18960 bytes
SHA-256: 098967934cf957638ad56cba9b42d16fd4e791ab8c0060c5046309dade9b52e6
font_01_sfnt_off0001237e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1237E 10124 bytes
SHA-256: e490e5d71ca768d62d8f9ca39eef85a8e3b60ae2db4449502e0efb241eef0a8a
font_02_sfnt_off00013a3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A3D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off0001524e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1524E 16092 bytes
SHA-256: 9d5144547e0b729630886a3ad3ce48e7da84b0115899dd9c2390406af6f0fecd

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