Malicious PDF — malware analysis report

Static analysis result for SHA-256 724cce612a860451…

MALICIOUS

PDF

74.8 KB Created: 2021-07-26 02:17:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 94d3b145e9e0bd1ee2072a1a0b5c66e3 SHA-1: eaab3885798fdf1f1784b7d7da0abcc92e9f7ab2 SHA-256: 724cce612a8604512e1edc1558e53057e3d31055f45e25f8c59e39d07c5623f1
124 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV with the signature Pdf.Phishing.Trojan. The PDF contains numerous links, many pointing to compromised WordPress upload storage and disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The presence of these links and the overall structure indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4750

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://beergolfers.com/blog/images/file/daripojuwotemove.pdf In PDF document text
    • http://gemculture.com/userfiles/file/51495232229.pdfIn PDF document text
    • https://quickonboarding.com/wp-content/plugins/super-forms/uploads/php/files/bf0ab4bf21918cf4720a5528845fce8e/99930172664.pdfIn PDF document text
    • http://maekuangudomthara.com/ckfinder/userfiles/files/zosuxitozifelaviz.pdfIn PDF document text
    • http://anhuicrew.com/upload_fck/file/2021-5-2/20210502103826710753.pdfIn PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b5adb9f3fd---favufenakofinoruren.pdfIn PDF document text
    • http://www.tecnotrefg.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609c78d921ddf---farobifununenixide.pdfIn PDF document text
    • https://icoachyou.biz/images/ckeditor/files/30563015036.pdfIn PDF document text
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160aaad5d8e921---komoduguwadekaj.pdfIn PDF document text
    • https://qualitylightsolutions.com/wp-content/plugins/super-forms/uploads/php/files/3004349a6b8f3fe5ebd85c2852a27a33/84409276531.pdfIn PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/d63474f55aeb24b282dabd6375dd3c4f/20898981742.pdfIn PDF document text
    • http://ventilatoryzlin.cz/images/file/70944318018.pdfIn PDF document text
    • http://trunghungplastic.com/luutru/files/39242875334.pdfIn PDF document text
    • http://stitesattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/69183561134.pdfIn PDF document text
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4ded425197---57173450398.pdfIn PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8722e4f253---widawema.pdfIn PDF document text
    • http://vector-luczak.pl/new/fck_user_files/file/xepolodixus.pdfIn PDF document text
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/160788faa38286---tevemuwo.pdfIn PDF document text
    • http://www.prctech-th.com/ckfinder/userfiles/files/xujefafimezumipu.pdfIn PDF document text
    • http://sklepjola.pl/userfiles/file/55861934785.pdfIn PDF document text
    • https://centrosteadycam.it/wp-content/plugins/super-forms/uploads/php/files/fa8eb585843f3680fb4980525cc3723a/40695110292.pdfIn PDF document text
    • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160ae1127c9baf---1386706688.pdfIn PDF document text
    • https://deltaguvenlik.net/userfiles/file/pasojagulifusa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=class+7+assignment+2+answer+englishPDF 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_off0000e471.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE471 10720 bytes
SHA-256: 9bd2c5fe0160188c870f3b88344569e1d8440da4e69ef43335aa1fdd27d74f20
font_01_sfnt_off0000fd02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD02 17028 bytes
SHA-256: 095ef387e145565f9714ff702e5123f7272bb41e4b860838928981e6ee4c3c3e