Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5ed37e74276447e…

MALICIOUS

PDF

87.3 KB Created: 2021-07-03 13:46:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 88d8cef535cea32e898c7a2e4d9d5554 SHA-1: 605926dd3c9d209acbf341f3af2f5ad3c98666c1 SHA-256: d5ed37e74276447ee93636baca8465bb029638ee768113a1e693ee486729766f
124 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting. ClamAV detected this file as Pdf.Phishing.Trojan, indicating a phishing or trojan distribution intent. The link farm structure suggests an attempt to lure users to external sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3778

Heuristics 5

  • 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
  • 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://archism.ru/uplcv?utm_term=lake+of+the+ozarks+fishing+report+march+2020 PDF link annotation
    • https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/m5ptpp797s1ppt4ebf01v20khd/72084576759.pdfIn PDF document text
    • https://pelicanfinancialnetwork.net/ckfinder/userfiles/files/sukoviwepila.pdfIn PDF document text
    • http://bhk-aindling.com/userfiles/files/12055727315.pdfIn PDF document text
    • http://flagrant-desir.com/userfiles/file/39774981531.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c831b0822d---lozirarejexakifivot.pdfIn PDF document text
    • http://joewhitefamilysite.com/clients/59967/File/4953533423.pdfIn PDF document text
    • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160a9c473ad0d0---movovuxaruwasuwosubako.pdfIn PDF document text
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/gncvofaul70re8idfrshsor814/lokaxeboseg.pdfIn PDF document text
    • http://446888.top/userfiles/file/26232211364.pdfIn PDF document text
    • http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080f5f6eff8f---jowanukijumutigejogi.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c2a9ad40538---39794416921.pdfIn PDF document text
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/qh5p944dr0enj5e737cpqg7am3/3854803898.pdfIn PDF document text
    • https://oversaslogistica.it/file/67929468522.pdfIn PDF document text
    • http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/o5s10c5g8eh59j9muu2esk9ve4/21876325218.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607cc3ee5804e---betozi.pdfIn PDF document text
    • http://computerdoki.hu/user/file/vadonolidewiwigunomofiru.pdfIn PDF document text
    • http://gift-founder.com/archive/upload/files/tevejibilusuwuvijefasuz.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607cd7b24bc72---rafanifunapeliv.pdfIn PDF document text
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609e80c0b5a16---58534990286.pdfIn PDF document text
    • https://mollis.rs//files/kubepilofokajiwuvoxojam.pdfIn PDF document text
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/16078384452c6e---2293160614.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16087182ccfff4---zisepekojuzitodezomezar.pdfIn PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/03a01247d49486131124d45a2b581013/84613897410.pdfIn PDF document text
    • http://dgjst.com/upfile/file/39009868805.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011153.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11153 11232 bytes
SHA-256: 7b0998aacd459dd32f57bf49add2166402534aab9fe7b29293054bfdeca8e219
font_01_sfnt_off00012b97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B97 17140 bytes
SHA-256: 3549ffa983d974cc572c191a80aecef3862cf04174936a7af94848a87dbc0a5f