Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2741418f0f4aaf4…

MALICIOUS

PDF

65.4 KB Created: 2021-08-14 10:38:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: af1fc3f28bd9c9fbbc6640a66ef462ea SHA-1: 38b5a24d4a330c3b639e12f1b308094421ca469c SHA-256: d2741418f0f4aaf4ef921350e8b7156ddc99590adf27191d7edf5a44c9d9fd40
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5715

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://huntic.ru/uplcv?utm_term=ezel+dizi+b%C3%B6l%C3%BCmleri+indir PDF link annotation
    • https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/d7krduscf9285g5rm7qi185c3u/93579125686.pdfIn PDF document text
    • https://gobelsprofil.com/upload/files/40859665736.pdfIn PDF document text
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079b9d357927---lirukojamo.pdfIn PDF document text
    • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ffb312af8c---2151784729.pdfIn PDF document text
    • https://kitapkapla.com/upload/ckfinder/files/74079318314.pdfIn PDF document text
    • https://parfumzone.ro/files/file/gifapekore.pdfIn PDF document text
    • http://studiofelician.com/userfiles/files/61219231458.pdfIn PDF document text
    • http://bestbuyfromindia.com/userfiles/file/nesazirivugotolizuzib.pdfIn PDF document text
    • http://exclusivelimoservice.com/ckfinder/userfiles/files/taturex.pdfIn PDF document text
    • http://moscowprice.com/content/xuploadimages/file/jaxanup.pdfIn PDF document text
    • http://kadh.kr/bobod/upload/file/fubegugux.pdfIn PDF document text
    • http://naturalmis.com/userfiles/file/15138650275.pdfIn PDF document text
    • http://sgyscom.com/upload_fck/file/2021-7-1/20210701201247883875.pdfIn PDF document text
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba1da8218ac---falujepufig.pdfIn PDF document text
    • https://francoisdaulte.com/ckfinder/userfiles/files/sujanuxamixi.pdfIn PDF document text
    • http://waltwhitmanclassof1965.com/clients/c/cc/ccbfa8a87e297cd67510599b8aebcb74/File/90361284237.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/160b7b7be205d1---65230231106.pdfIn PDF document text
    • https://asiarsolutions.com/userfiles/file/laxowafem.pdfIn PDF document text
    • https://daluxerealty.com/wp-content/plugins/super-forms/uploads/php/files/m649chakcd6k0ka7b4d33i6gv3/70511197017.pdfIn PDF document text
    • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084f7616cdbd---38052349020.pdfIn PDF document text
    • http://grupophi.es/uploads/files/tubogaxuwugixinul.pdfIn PDF document text
    • https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/9d5e209c6843908330a4c7eaf0d2e6ae/16925281959.pdfIn PDF document text
    • https://almondzwealth.com/administrator/imagetemp/file/vesotezo.pdfIn PDF document text
    • http://www.radanhorse.com/resource/files/12980490938.pdfIn PDF document text
    • http://sakuragiramenandsushi.com/uploads/files/vovaveporibotalagubu.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_off0000bda0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDA0 10452 bytes
SHA-256: 982760df579c4448529700d4e6319a1f3bdee9ec338fa10828b051bfb34d00e5
font_01_sfnt_off0000d4d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4D8 17060 bytes
SHA-256: 7cd5b374c772955e195ec81c35505d29d0437b383b43f033dc4146540c81206e

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