Malicious PDF — malware analysis report

Static analysis result for SHA-256 132d7b00cfce4b79…

MALICIOUS

PDF

87.7 KB Created: 2021-06-28 04:18:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: b97e626aaf6558df99126211d8f4dab9 SHA-1: dea39aae493ee5f3e049a83b476358aba6966309 SHA-256: 132d7b00cfce4b79bc11c0ff5d9d5d6d9466790a73bd4455740f8559c23f1ffa
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm designed to lure users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution through these external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/afa75461d7384047afc51a21f583f027/nozakagagiso.pdf In PDF document text
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aadf3f6aff8---sebipi.pdfIn PDF document text
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/a4eaa6050d308b94365cdb788510109d/tulilijoranuwiziz.pdfIn PDF document text
    • http://biotop-zamosc.pl/userfiles/file/gulujale.pdfIn PDF document text
    • https://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/6b6fee99bd27f665651febf65927dabf/14256679586.pdfIn PDF document text
    • http://pivotal-technologies.com/userfiles/file/12899796787.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1608d6b4eca76f---93408844267.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/e5640d6ef8792cb17a540d69bd1a649b/mebarobovekaziza.pdfIn PDF document text
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/93bc074a4126291a7c908d485278848c/xivuzazapabelosevodolivi.pdfIn PDF document text
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/7a2f3f0af32ac79f5064e62c4b9cee49/munezolobezokobadefebon.pdfIn PDF document text
    • https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/1dec4d3f75da0a7fe39da7c00770322a/sekewubajurasuziposesowaw.pdfIn PDF document text
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/vjqnngtig4uo535327cpr77ut1/soderatepip.pdfIn PDF document text
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090cf908644b---12132145863.pdfIn PDF document text
    • http://ankaser.com/userfiles/file/tivataguvapigunuvapewut.pdfIn PDF document text
    • http://viral-list-machine.com/ckfinder/userfiles/publics/files/57376148265.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160842f5c3eefb---figokalaxelope.pdfIn PDF document text
    • https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/1609e9d1494114---kosadota.pdfIn PDF document text
    • https://nanosoft.mn/images/content/File/misuka.pdfIn PDF document text
    • https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/a87a61a0de7973f4f0cd722e16013323/64029060884.pdfIn PDF document text
    • https://orldoc.ch/wp-content/plugins/super-forms/uploads/php/files/3lnpofi8tpp5a335micd6jca34/8478418012.pdfIn PDF document text
    • https://realschoolspirit.net/scauserfiles/files/41166468813.pdfIn PDF document text
    • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/160983c9a6dc8c---80554616817.pdfIn PDF document text
    • https://ancoraeducacion.com/images/zetilifuremasugulujep.pdfIn PDF document text
    • https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/89e881b3bc72c8eb50053968851afb6d/nomebava.pdfIn PDF document text
    • http://princeworldwide.com/multimedia/userfiles/file/suxojexijijuxuzowiso.pdfIn PDF document text
    • https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/m8msu5a4mqb2pm8urjfetiol38/96846680241.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=tibet+meaning+in+kannadaPDF 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_off0000ee4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE4C 10352 bytes
SHA-256: 2d8ddb240a58eb7279d023fbbe48569d73e44a8a400ef58f59c638fe006e3a74
font_01_sfnt_off0001056d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1056D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011d7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D7F 20960 bytes
SHA-256: e91b1f595251ae18a3dadf1d45f6af6a513a0ce6f89ea2c0da5af2b9d4dd9fac

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