Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbb48c5e0e9b8ffe…

MALICIOUS

PDF

76.1 KB Created: 2021-06-17 20:19:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 96a9df31249375153e65dff338282147 SHA-1: 79a385fd845f993a10852808838ba7035bcf8b1b SHA-256: cbb48c5e0e9b8ffe87373b44cd10f9bae9edf5c67d4898e453f36d3e5a92a94e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains numerous links to compromised websites and disposable hosting, likely serving as a link farm to redirect users to malicious content. The document body, though heavily obfuscated, suggests a lure related to 'Gujarati bhakti ringtone download'. No scripts were extracted, but the presence of external URIs and compromised CMS uploads points to a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6536

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://allytemp.ru/uplcv?utm_term=gujarati+bhakti+ringtone+download PDF link annotation
    • https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/fkkac1hbm86nvj7st06mrr2nam/28966292191.pdfIn PDF document text
    • http://ideas4mypool.com/userfiles/file/mibutuxidoverabalan.pdfIn PDF document text
    • https://classconnbio.com/img-jacson/files/pudowevinivakevoxit.pdfIn PDF document text
    • http://fernandopelosini.it/userfiles/files/81230927014.pdfIn PDF document text
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609affd627cb8---dupazowunizewevamoxawope.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/11eef3f91175b534ce65484670969bb3/tibalojilazunaxu.pdfIn PDF document text
    • https://qualitylightsolutions.com/wp-content/plugins/super-forms/uploads/php/files/f3b0168f36a540128e411798b0239178/xalam.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/5csr4kbkui76dgqjdo4c92b1k6/vupafa.pdfIn PDF document text
    • https://eobliecky.sk/userfiles/file/54093558753.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160781abe68ec6---15552263095.pdfIn PDF document text
    • http://shreyaghoshal.com/konadnew/userfiles/file/18644739267.pdfIn PDF document text
    • http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b18a4e9a10c---redinajaterefop.pdfIn PDF document text
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/f27a4855a8b59afd354b434578c34379/waviloxipitugi.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3cbf7536d9---88151573229.pdfIn PDF document text
    • http://humanitool.ru/userfiles/file/61356543074.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160aae4a12f491---86213492828.pdfIn PDF document text
    • https://fullhousetourism.com/UploadFiles/file/20210529204632189.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d14c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD14C 5312 bytes
SHA-256: 59dcb806d1341012a20a9a1ba2e4777e20f2fad4a583cd615eb2b7695b81a708
font_01_sfnt_off0000e361.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE361 2024 bytes
SHA-256: a511fb262e2f240b0cc62b800179189f1c69c7b4d67d938f9bc0c5e12ef74554
font_02_sfnt_off0000ecf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECF6 11132 bytes
SHA-256: 046a24045eb680604c8045616d12c0e83213aa99a84204ac2fe92e5637ebebe8
font_03_sfnt_off000112fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112FC 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15

Open this report in the interactive analyzer, or submit your own file for analysis.