Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bea00ebd63c085d…

MALICIOUS

PDF

74.9 KB Created: 2021-07-04 20:59:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 9a3bef5adfdd79b69fb16276fe5c2ea0 SHA-1: a5da0de696b04dd66792087eb8cf9e09336d6fa6 SHA-256: 2bea00ebd63c085df9e293672642527119e269a4dfc508f6936b8d9d78283ccd
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as a phishing trojan. Static analysis revealed it functions as a link farm, embedding numerous URLs that point to potentially compromised websites or disposable hosting. The presence of these links suggests an attempt to redirect users to malicious sites for phishing or malware downloads. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://pistant.ru/uplcv?utm_term=paw+patrol+race+to+the+rescue+game+instructions PDF link annotation
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/e0898c1656cd820a8ad04ec9fa1393e7/fovemojalupivajunake.pdfIn PDF document text
    • https://rumahbaruku.com/contents//files/legavonubogibosesate.pdfIn PDF document text
    • http://brucemsmithlaw.com/clients/e/e2/e252bfde01ef004f685a9648d307a4b9/File/xosisalusas.pdfIn PDF document text
    • https://lakeshoresmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/q4k0l97rc02c2vahg1g50tma81/7857289283.pdfIn PDF document text
    • http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609047d3447a8---xuzawat.pdfIn PDF document text
    • http://airholic.com/UpFiles/WebEditorFiles/file/48516657850.pdfIn PDF document text
    • http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3c1c799b8d---xavodaxuxuladekip.pdfIn PDF document text
    • http://nedirajtebosnu.net/userfiles/file/nogexigozubopasu.pdfIn PDF document text
    • https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/ecd9f29a52a5df11f8a74605e9a1cb03/22408642719.pdfIn PDF document text
    • https://scriptdd.com/_file/file/98451574660.pdfIn PDF document text
    • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/1606f42513fc66---27037595688.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ac1e714d517---vufutijizafesenefosuz.pdfIn PDF document text
    • https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/a2c0387969cd4e6cc9a657b059a453a5/bavagusosumogubiwepojeben.pdfIn PDF document text
    • https://avenue102.com/uploads/file/porezeperiwufeto.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c17a4a804a1---mukibumoduxipoxevenifalu.pdfIn PDF document text
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a7555df2322---zudarolemilafopip.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160777f5ad71c2---sumoxuni.pdfIn PDF document text
    • http://apluskleaning.com/admin/images/file/jemurofuguduronuve.pdfIn PDF document text
    • http://wurbs-hanau.de/userfiles/file/94744072431.pdfIn PDF document text
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087f2da9df2f---34246975233.pdfIn PDF document text
    • http://stressmanagement-karriere.de/userfiles/file/95669143252.pdfIn PDF document text
    • http://smclassof57.org/clients/34860/File/35919545175.pdfIn PDF document text
    • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/05aa5cf16e512ae426eff8e72b1bbdf7/35351737323.pdfIn PDF document text
    • http://drwatsonsr.com/clients/2/2b/2b9a0cf27321ceab3a47fbd10bf94d34/File/kevamos.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_off0000c2e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2E5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000dafc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAFC 11008 bytes
SHA-256: 771ddf44f63ce4a8c6f4de2b8d35cae2f4e2e91126d7d825df7f5752ca219282
font_02_sfnt_off0000f478.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF478 16144 bytes
SHA-256: 5114a0556bb7af860deb5e95cb9bdf421d1524e533b71b6f6337c14204d9583f

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