Malicious PDF — malware analysis report

Static analysis result for SHA-256 65fb0d8248b9939a…

MALICIOUS

PDF

95.6 KB Created: 2021-07-14 01:18:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 7e665d270347457244906493abc56a3e SHA-1: 3fccee6f9477d2a8a376e68efc51de57478c0b8d SHA-256: 65fb0d8248b9939a03529d3be3c41b32c8c417a4fa9ec5960e6a5a811238bc3e
124 Risk Score

Malware Insights

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

The file was detected by ClamAV as Pdf.Phishing.Trojan. Heuristics indicate it functions as a link farm, with multiple URLs pointing to compromised WordPress upload directories. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of numerous links to potentially malicious content suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.1876

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://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bcfcb33b46d---97578134729.pdf In PDF document text
    • http://d4sontario.com/clients/e/ed/ed023a0734c265ca673a92d1d81de675/File/3997795819.pdfIn PDF document text
    • https://vasantviharproperties.com/userfiles/file/7400721729.pdfIn PDF document text
    • http://postelezmasivu-brno.com/ckfinder/userfiles/files/mumatepinefogotatexa.pdfIn PDF document text
    • https://rosycaffe.com/file/259484658.pdfIn PDF document text
    • http://www.protectakoteasia.com/ckfinder/userfiles/files/gorefoliruve.pdfIn PDF document text
    • http://carefirstwalkathon.com/clients/8/89/89514deb4c0e8807eb046cac28c4977f/File/sabavamasuvidotepanol.pdfIn PDF document text
    • http://boulderdivorcelaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5396befc31---34673313458.pdfIn PDF document text
    • http://medtravel.pro/images/hand_uploaded/files/nutibugapenalaver.pdfIn PDF document text
    • https://zevkotodoseme.com/upload/ckfinder/files/xibowumami.pdfIn PDF document text
    • http://jpbullies.com/clients/2/2c/2c827f09d77a589c2c5c7da8c033a3f4/File/wipamomulazijalavop.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/8156988880ce8605b7ca5e37f34262a1/vetedofigititizimesesoni.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/1606f333f09175---walekaxagalinagokopapod.pdfIn PDF document text
    • http://accomplishtheimpossible.com/userfiles_ati/file/5062148599.pdfIn PDF document text
    • http://euro520.net/userfiles/file/16232137461839366238.pdfIn PDF document text
    • https://chiataiec.com/userfiles/Proj_Name//files/jokimaroj.pdfIn PDF document text
    • http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/1bb89c9a7f7b060580ee2e413e58c43f/24829052882.pdfIn PDF document text
    • https://www.gasserbush.com/wp-content/plugins/super-forms/uploads/php/files/38789701e8f1b562eff47722afec4d77/56387420993.pdfIn PDF document text
    • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/075a5977eac4410bd59cefabd614cc5d/puvoxajixatetasinimepani.pdfIn PDF document text
    • https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609faf694bf3e---9392407284.pdfIn PDF document text
    • https://havadisname.com/upload/ckfinder/files/wexobonurovil.pdfIn PDF document text
    • https://fid-data.fr/app/webroot/uploaderfiles/vekikixaze.pdfIn PDF document text
    • https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/941d7f672ca645b78cd8356a5b1a5fe4/dokuwovugog.pdfIn PDF document text
    • http://ebanksunited.com/clients/7/7d/7da19d52c1086e69e61582739ce98a0f/File/saxozabikagamewu.pdfIn PDF document text
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/dkecn5au2gdodqa3eephcca2a3/jojixaxopesumel.pdfIn PDF document text
    • http://dkyangmei.com/uploadfile/file/2021062721445373499.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=concrete+operational+stage+of+cognitive+developmentPDF 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_off000129c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129C2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000141d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141D9 11060 bytes
SHA-256: 2eadd5d32b996aaf183053009543b83bcc2e7f581b0a97d4eb7bf7622fbfd201