Malicious PDF — malware analysis report

Static analysis result for SHA-256 7288e9d06bf3d788…

MALICIOUS

PDF

74.8 KB Created: 2021-09-04 12:22:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 7de2290cdae0a97181cea015baeb8040 SHA-1: 99c8b05a717d38d083e8ebd3ca80be47124d6b07 SHA-256: 7288e9d06bf3d78845a982e051d108ef05aa9db129a8188cb4b62c3804fb8201
154 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It functions as a link farm, directing users to multiple external URLs, some of which are hosted on compromised CMS upload directories. The primary purpose appears to be to lure users to malicious sites through a variety of deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5832

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://protechlighting.com/wp-content/plugins/super-forms/uploads/php/files/bf5e47a49a7422fe89b34859407f7bd2/10789414227.pdf In PDF document text
    • https://abofahed.com/userfiles/file/79110915347.pdfIn PDF document text
    • http://www.moteco.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16080327c725dd---43114375587.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cd81c1c961---16953669224.pdfIn PDF document text
    • https://codecs.ro/images/file/76563651600.pdfIn PDF document text
    • http://remproekt-m.ru/admin/ckfinder/userfiles/files/gijupeledipipofurizafuj.pdfIn PDF document text
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a157f774515---71658231652.pdfIn PDF document text
    • http://grgct.com/ckfinder/userfiles/files/91186658601.pdfIn PDF document text
    • https://festival.bg/fckeditorfiles/file/95556737383.pdfIn PDF document text
    • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/aa1896791d96d1cdb37c4db4caa3859a/fujonakuwojewegakuxof.pdfIn PDF document text
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160850e4251b4a---jelewiboduserunipujatal.pdfIn PDF document text
    • http://ginzaoakland.com/uploads/files/63388597953.pdfIn PDF document text
    • http://zatoodesign.com/userfiles/files/8911880280.pdfIn PDF document text
    • http://proxkimya.com/resimler/files/84579778002.pdfIn PDF document text
    • http://rgn2u.com/userfiles/files/duziwuduwa.pdfIn PDF document text
    • http://psychologkmalinowska.pl/ckfinder/userfiles/files/21301847275.pdfIn PDF document text
    • https://paidionresearch.com/userfiles/files/14782216355.pdfIn PDF document text
    • https://www.prestigeautobody.com.au/wp-content/plugins/super-forms/uploads/php/files/3528b1813997b73c3bab6e299e35dd6a/67317494296.pdfIn PDF document text
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b2149856b7---17302714331.pdfIn PDF document text
    • http://bbfrontedelmare.com/userfiles/files/doridisugikoviw.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1607890c71fc17---73567428115.pdfIn PDF document text
    • http://www.lukoilmarine.com/ckfinder/userfiles/files/15841697742.pdfIn PDF document text
    • https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/5fqktuchsbojst6f9je28cmv96/50220531979.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=psychological+warfare+techniques+at+work+pdfPDF link annotation
    • 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_off0000d870.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD870 19192 bytes
SHA-256: ce00ece9028d4457fc66e24e9d8151b9d5f82418ac60d0580279e7b4f4be18b2
font_01_sfnt_off00010923.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10923 11436 bytes
SHA-256: 166673a44581933d468caa80bec531a681d8d15abd65052842e2ac89513bc2ee