Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0d0bcbe9884b5e7…

MALICIOUS

PDF

95.7 KB Created: 2021-08-30 19:21:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 6e315cbcaf626bd2d4c92758bb555f88 SHA-1: 662999a0ed8d660ea35259134dbac767b767b693 SHA-256: b0d0bcbe9884b5e70113c430f298b3ca62b63bb9dcf6c72dbc194b54725153eb
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a significant number of embedded URLs, many of which point to compromised CMS upload storage or disposable hosting, indicating a link farm designed for phishing or malware distribution. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. While no scripts were explicitly extracted, the structure and URL patterns are highly indicative of a malicious document intended to lure users to external sites.

Machine Learning

  • Nyx PDF Classifier clean score 0.1383

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://philabc.ru/uplcv?utm_term=possible+presidential+candidates PDF link annotation
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d1a17cc4bd---45845134631.pdfIn PDF document text
    • https://sport-jicin.cz/dokumenty/15300037755.pdfIn PDF document text
    • https://ideylia.fr/uploads/file/84614281492.pdfIn PDF document text
    • http://penzion-u-zamku.cz/files/file/ruwomid.pdfIn PDF document text
    • https://laser-arena.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16087d4014e2a5---bimusowalukejox.pdfIn PDF document text
    • http://lyshiying.com/d/files/nodojidikibatudafateje.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/160863204e5546---radovapedujulerogujunal.pdfIn PDF document text
    • https://www.cukoyem.com.tr/wp-content/plugins/super-forms/uploads/php/files/gi0rfdh5s2eqf1hl23ln01j8a7/16803969477.pdfIn PDF document text
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/ec9d938f7781188e57f3237fa2d3ee11/ruzofuwopewaxevosufofow.pdfIn PDF document text
    • https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/jabd2g5oi7ja1e2j0i0rtshhkf/14709912217.pdfIn PDF document text
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609c17fc63ee0---75770313593.pdfIn PDF document text
    • http://amghanoi.com/images/ckeditor/files/kipidibo.pdfIn PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abf09d2f6a9---48130144821.pdfIn PDF document text
    • https://hongmao.tw/uploads/files/202108271714024799.pdfIn PDF document text
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/7qnfn7dm9tikfp9t670s9c1582/5435171821.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075d6eb50833---64048730851.pdfIn PDF document text
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/0ee78cb8af562767bb7b5314494c1dcf/96311939977.pdfIn PDF document text
    • https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/6bbb67ce4c1041effbe8c42cf9a3dca7/92996698697.pdfIn PDF document text
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/cj3t0gcbjk19e7uohofes832il/13805608877.pdfIn PDF document text
    • http://angelojrobles.com/admin_initial_test/userfiles/file/82846769915.pdfIn PDF document text
    • http://dribblebar.pl/userfiles/file/33050601483.pdfIn PDF document text
    • http://www.photonics-science.com/ckfinder/userfiles/files/65306117610.pdfIn PDF document text
    • http://automsystem.com/UploadFile/file/20210513001432873.pdfIn PDF document text
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b74aad77518---rujiwe.pdfIn PDF document text
    • http://businessplan-capalpha.eu/mbp/upload/images/images/upload/ckfinder/biwonivifakodo.pdfIn PDF document text
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e665504fb2---pafobajutejiw.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_off00013acd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13ACD 10648 bytes
SHA-256: 269b0f0c11d5a9f53b8104370b9caf1bb3ef50a4ddd95dab3d8b91cc1ce82bea
font_01_sfnt_off00015317.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15317 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1