Malicious PDF — malware analysis report

Static analysis result for SHA-256 97b0d6a095ac44ca…

MALICIOUS

PDF

77.6 KB Created: 2021-09-20 07:04:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 35a323820e7aab4ab79263d77c581dee SHA-1: 008ea314e7bac2047e375c115e782d4be0fedd08 SHA-256: 97b0d6a095ac44ca06f1eab8e87f6ce2db936139c2a801fb3b5a5031c6aedda3
124 Risk Score

Malware Insights

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

The PDF file was detected by ClamAV as Pdf.Phishing.Trojan. Heuristics indicate it functions as a link farm, with multiple embedded URLs pointing to various websites, some hosted on compromised CMS uploads. The presence of numerous links, including those on disposable hosting, suggests an attempt to lure users to malicious sites for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4682

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://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/00ba2c9b766e10b49db95c7ca2478948/45482565146.pdf In PDF document text
    • http://armanetti.com/images/vebumezapixelarubo.pdfIn PDF document text
    • https://propertiproperty.com/Uploads/userfiles/files/vudakunixopasezolaniket.pdfIn PDF document text
    • https://resttour.com/images/userfiles/files/54976091182.pdfIn PDF document text
    • http://agisinfo.ru/uploads/content/files/99449914545.pdfIn PDF document text
    • https://martabaktelor.com/contents/files/26114838493.pdfIn PDF document text
    • https://birsamundapark.in/userfiles/files/molix.pdfIn PDF document text
    • http://apple888.vn/luutru/files/22341485895.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/0ab041ca12b3a649e234cbfe0fc7d9c3/22181904467.pdfIn PDF document text
    • https://www.habitat-morvan.fr/ckfinder/userfiles/files/konowepiwozisobiz.pdfIn PDF document text
    • http://retrofotr.cz/files/file/gegawesebuvisobip.pdfIn PDF document text
    • http://sakaryakasaplarodasi.org/userfiles/file/68320160221.pdfIn PDF document text
    • https://stayinbranson.com/ckfinder/triplebuserfiles/file/kejijerawosa.pdfIn PDF document text
    • http://bluebirdcanada.com/FileData/ckfinder/files/20210911_20358DA9EA11C218.pdfIn PDF document text
    • http://dija.lv/public/userfiles/file/pogunikevufebutiw.pdfIn PDF document text
    • https://indiantalentjunction.com/milan/media/35859808865.pdfIn PDF document text
    • https://rent-1.es/ckfinder/userfiles/files/xeruwevawililodenefezuje.pdfIn PDF document text
    • https://ever.dacola.com/upload/files/lidogegirezaluguxipi.pdfIn PDF document text
    • https://pacientes.quiroser.com/UserFilesQUI/file/52015394555.pdfIn PDF document text
    • http://crocepadrekolbe.it/userfiles/files/vuwigituviwulusaz.pdfIn PDF document text
    • http://flairpens.ru/uploads/file/kovokebaviwenedu.pdfIn PDF document text
    • http://dhf-china.com/d/files/78586882771.pdfIn PDF document text
    • http://swancentive.com/cote_dor_import/admin/ckfinder/userfiles/files/16994665093.pdfIn PDF document text
    • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/ihth8hjuls1lhju5glbppo6otk/73309327340.pdfIn PDF document text
    • http://trungtamsangloc.vn/uploads/ck_upload/files/64701527274.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=naruto+storm+4+android+offlinePDF 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_off0000de13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE13 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f62a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF62A 10668 bytes
SHA-256: f9593439f20b69bd043aba3144b7e5052ee0417a38acb10524448103ae977479
font_02_sfnt_off00010ea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EA5 18156 bytes
SHA-256: 8b23840ebf9e8178d1cefd6693d9447cb3f65e79f9a3c04b238bf7ffa5938307