Malicious PDF — malware analysis report

Static analysis result for SHA-256 050885589bb3460a…

MALICIOUS

PDF

62.5 KB Created: 2021-09-09 13:02:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 9a8ffd6ac0a45bf7efc76604451849d7 SHA-1: 6bad57f535d7c45ec64ce0f0fa995e21563046e4 SHA-256: 050885589bb3460aea0ab6cb133b1a967cb87400408e3feb1996c492e58b0ce8
124 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates it contains a large number of links pointing to disposable hosting, suggesting a link farm designed to obscure the ultimate destination. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9142

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/1612f3ff6e5bf8---vigivolulabizaf.pdf In PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/16137774b5320b---90198071101.pdfIn PDF document text
    • http://mp-journal.com/media/file/89459231520.pdfIn PDF document text
    • http://americansemitruckparts.com/d/files/bunediw.pdfIn PDF document text
    • https://tatsolarlight.com/uploads/files/xivof.pdfIn PDF document text
    • http://salman-is.com/userfiles/file/safurebaxof.pdfIn PDF document text
    • http://webinaris.training/ckfinder/userfiles/publics/files/kegugifuxeb.pdfIn PDF document text
    • http://timebymtm.com/upload/files/wetirajejal.pdfIn PDF document text
    • http://fixafilm.se/userfiles/file/40226367270.pdfIn PDF document text
    • https://najlepsze-w-polsce.pl/uploads/5746928079.pdfIn PDF document text
    • https://oxfordjsr.com/userfiles/file/satedewuverasuxaxizewu.pdfIn PDF document text
    • https://gkia.org/kingkong/userfiles/files/99313091077.pdfIn PDF document text
    • https://garraldaarquitectura.com/garralda_userfiles/files/gubupim.pdfIn PDF document text
    • http://eros-arena.com/eros/userfiles/file/12459514873.pdfIn PDF document text
    • http://bc-arman.kz/ckfinder/userfiles/files/lidibidukekevivofu.pdfIn PDF document text
    • https://ingatlansos.hu/images/userfiles/file/forizogovanovekowozedowoz.pdfIn PDF document text
    • http://bluecars.pl/userfiles/file/65453120229.pdfIn PDF document text
    • http://geometrabottero.it/userfiles/files/pisivurapulexitozo.pdfIn PDF document text
    • http://gaushalango.com/uploaded_files/userfiles/files/xegakeloteso.pdfIn PDF document text
    • http://coomargroup.com/ckfinder/userfiles/files/degofaturezesalib.pdfIn PDF document text
    • http://avtosfera28.ru/userfiles/file/rikorividifedotani.pdfIn PDF document text
    • http://basse-normandie.annuaire-regional.com/ckfinder/userfiles/files/7458880467.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=pushing+someone+away+quotesPDF link annotation
    • http://zs.tom.ru/jsplugins/ckfinder/userfiles/files/begujifupubu.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d8f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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