Malicious PDF — malware analysis report

Static analysis result for SHA-256 da108478c802d62c…

MALICIOUS

PDF

159.3 KB Created: 2021-08-21 20:10:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 463c5913364e36873fc8abc990701ef8 SHA-1: 84f0cfbfbfec955af27ada55e549610bfa38083c SHA-256: da108478c802d62c33b2be278cb84aeaafd2422309e49b130eb432e534313bad
124 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised CMS uploads, suggesting it's designed to lure users to malicious sites. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports a phishing or trojan distribution intent. No scripts were extracted, and the document body was unreadable, limiting further analysis of specific payloads.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4293

Heuristics 5

  • 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
  • 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://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607efb302b0eb---kivudovadusugi.pdf In PDF document text
    • http://fw-simple.com/uploads/files/mevanabon.pdfIn PDF document text
    • http://thedreaminitiative.org/Content/Admin/uploads/files/75200105381.pdfIn PDF document text
    • https://ajwatravel.com/wheelmarine/userfiles/file/39505302608.pdfIn PDF document text
    • https://karapinarinsaat.net/userfiles/upload/file/72166089774.pdfIn PDF document text
    • https://nestaerospace.com/uploads/file/sisuzin.pdfIn PDF document text
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/458b9a2799bd59bdd1dd0d6e530a07a0/9137346849.pdfIn PDF document text
    • http://koreaticketland.com/userfile/file/21293886225.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/160c96a88b9edf---wukusi.pdfIn PDF document text
    • https://dakhoathienhoa.net/images/files/peribapupu.pdfIn PDF document text
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a2334d96def---10898220401.pdfIn PDF document text
    • https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/ad245dbd08d14a2a5d7e3575b47b175d/17780418059.pdfIn PDF document text
    • http://sxhk365.com/uploads/file///13107861182.pdfIn PDF document text
    • http://peoriamayorprayerevent.com/clients/1/16/166e3f524b51ec168ebfd48f86188a1d/File/sokibepofexadosirawinana.pdfIn PDF document text
    • http://www.hausbaumesse.at/ckfinder/userfiles/files/79407052079.pdfIn PDF document text
    • http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad43c370cd7---72476355920.pdfIn PDF document text
    • http://skylineidaho69.com/clients/c/c7/c7306e0a9cc1d421caefa9c307ca601f/File/nupujazun.pdfIn PDF document text
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16083d0be7799f---makejufubisajaxanolodali.pdfIn PDF document text
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/16073dfc39acbc---70855010615.pdfIn PDF document text
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/11ba3f9b0f626cbce5d6d5328feabb82/kiwojivimejigip.pdfIn PDF document text
    • http://xn----8sbnbd9chja.xn--p1ai/userfiles/file/toruxom.pdfIn PDF document text
    • https://quatcongnghieput.com/uploads/files/59444882236.pdfIn PDF document text
    • http://sjar-tech.com/uploadfile/file///2021080803455579.pdfIn PDF document text
    • http://vtvxm.vn/userfiles/file/fivixowusus.pdfIn PDF document text
    • https://tranduongauto.com/app/webroot/files/images/pages/files/poxun.pdfIn PDF document text
    • https://panegovernance.com/ourprojects/chowki/UserFiles/file/96641446810.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=libro+matematicas+primer+grado+telesecundaria+pdfPDF link annotation
    • 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_off00021aa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21AA3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000232ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x232BA 11160 bytes
SHA-256: 98e8f37c8dfe452ee9b0a0e5c92fe30133de651d756f37dd92f2dd45a2b1bc8e
font_02_sfnt_off00024c63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24C63 20444 bytes
SHA-256: 207b88229bc7caa22b05f5090927c4876dccbd38de16891dd6fde6a1b87beacb