Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e17c08273c0fd18…

MALICIOUS

PDF

67.5 KB Created: 2021-09-04 01:38:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 10c477541448b2a5d2ed5cc3e5fc6f2c SHA-1: 0201f14c987938e3a58d1daa70e95b0d958aa75f SHA-256: 2e17c08273c0fd18461907a6d6adea723f8a87490badea4ad8dab7cb6c281103
154 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains numerous embedded URLs that form a link farm, with many pointing to compromised WordPress upload storage or disposable hosting. These links likely serve to redirect users to malicious content or download further payloads, indicating a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9108

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://vmwarts.com/ecovic/file/xewufi.pdf In PDF document text
    • http://agrion.org/upload/fichier/sederolizivazulamijurisa.pdfIn PDF document text
    • https://ntc-container.com/upload/files/japevelobetakezagoju.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb2fecfc79---boxubivabo.pdfIn PDF document text
    • http://shopcloud.cloud//ckfinder/userfiles/files/kejaxijujaka.pdfIn PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610108e7689b5---volin.pdfIn PDF document text
    • http://nesthomes.in/userfiles/file/55533258834.pdfIn PDF document text
    • http://gleneaglehoa.org/images/file/supugemixu.pdfIn PDF document text
    • https://frontiersneurophotonics.org/wp-content/plugins/formcraft/file-upload/server/content/files/1/160bc02e14aac6---5227346442.pdfIn PDF document text
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/160727eccf3e0b---tivifefadowebolagirufurom.pdfIn PDF document text
    • http://eurolocal.info/sites/default/files/images/file/tezizegowexokekejemima.pdfIn PDF document text
    • https://forex-robo.org/wp-content/plugins/super-forms/uploads/php/files/33520ea16ede14a773a832aabb441c86/95907298012.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf6c08a7091---lerowuxapido.pdfIn PDF document text
    • https://gamma-electronics-eg.com/userfiles/files/mixeribeniz.pdfIn PDF document text
    • http://hilltopperalumni.com/clients/9/93/936f23dc4abb03f6d4a1aae2c8a32781/File/gerileredexewesapi.pdfIn PDF document text
    • http://dohertylaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/51733383817.pdfIn PDF document text
    • http://smit-electronic.hr/upload/datoteke/39508634954.pdfIn PDF document text
    • http://www.libroparlatolions.it/backoffice/ckfinder/userfiles/files/fefifubupora.pdfIn PDF document text
    • http://azstorestudio.com/uploads/files/kuleda.pdfIn PDF document text
    • https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/qqh5f315oqopf1fospttebaqr4/16761543077.pdfIn PDF document text
    • http://tourister.kr/userfiles/file/35994069360.pdfIn PDF document text
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/62b823f2fb9b33e1acb4b8607dbf5326/lemegupesijige.pdfIn PDF document text
    • https://jobtiara.com/files/files/78329806723.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=free+printable+princess+coloring+pages+pdfPDF link annotation
    • https://www.rt9.rspo.org/ckfinder/userfiles/files/96793449769.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5B6 16776 bytes
SHA-256: 2015fe7f3f0e7327df81b06fb3e0c1b51bdbe7c21c988cb4caffe3f668b125a7

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