Malicious PDF — malware analysis report

Static analysis result for SHA-256 47d14266e0157759…

MALICIOUS

PDF

76.2 KB Created: 2021-08-24 02:43:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e048721a1bdaf787022a73637b0b2aa2 SHA-1: 7312475ca4bbf8a7ea2dea6143d3edf9865c5a1a SHA-256: 47d14266e01577593031fa16b78772b786aba3e3e862136bd78f1134ca032c88
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected by ClamAV as Pdf.Phishing.Trojan. Heuristics indicate it functions as a link farm, with numerous URLs pointing to compromised WordPress sites and other domains. The presence of external URIs and the overall structure suggest it is designed to redirect users to malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5474

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://chcial.ru/uplcv?utm_term=eye+twitching+in+kids
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/161012652a27da---gufafavuxabu.pdf
    • http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608319a0b71f7---wulivadokudugolekepejowa.pdf
    • https://ip-pharma.net/data/files/vekurigelora.pdf
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16098325e85f53---9301289448.pdf
    • https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607f938d129b0---bapuvi.pdf
    • http://strandedtattoo.net/file/77182308795.pdf
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/526bbb4b05f8cf65f5c59060102bd466/75953835365.pdf
    • https://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/aacaf6f8aad7afb6c119eb631bcce719/dewowiwuletojadodixi.pdf
    • https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/ccabe689008f70c5c154fb9436f083ee/podedipedotutuvapi.pdf
    • https://chongtham68.com/app/webroot/uploads/files/gogogaja.pdf
    • https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/f0a772dc7eb1f9d98273e63d42ab3931/69000179396.pdf
    • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607d9dc6abc18---bizaxokuxi.pdf
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/lumumomaka.pdf
    • http://mya1fc.com/files/ckuploads/files/26309698215.pdf
    • http://secondhandgraphics.com/usrfiles/file/66757449541.pdf
    • http://webhenevents.com/clients/868374/File/67887867729.pdf
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611721bbab722---fobidewukamunawabefogu.pdf
    • http://feach.ie/images/uploads/file/27997496705.pdf
    • http://china-hold.com/UploadFile/file/20210514130709794.pdf
    • http://toyotarent.kr/FileData/ckfinder/files/20210702_057516E864EB4D4C.pdf
    • https://expeditions-travel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d483c51a88---kozejikofebo.pdf
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/a39c43f2e17e78b68bee51e3f706b421/kaxufidokawelugezogit.pdf
    • https://thewaves.net/wp-content/plugins/super-forms/uploads/php/files/9ecckvba8l9r3ij7f5jq7bc2tt/24866182651.pdf
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e372.bin
ff5ff4f5313ca33b4387629e61b46f88769bc9ca2deff181685763c3a2a3339f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE372 10496 bytes
font_01_sfnt_off0000fb13.bin
af24fd386f908da2aaa399379e575e98134544410f2a7aeb203148c87d3c903a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB13 16152 bytes

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