Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a2c0ddf7b667e6d…

MALICIOUS

PDF

77.6 KB Created: 2021-07-26 09:04:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 87c95a5b50fb1b622014dda06b101d6f SHA-1: b87521d7e53909c395c12e12aa0c9b3ddbd7c850 SHA-256: 0a2c0ddf7b667e6da7731276c7e3b14c2d6896da98d75b4312df8df97bfd1050
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to distribute malicious content. ClamAV detected this file as Pdf.Phishing.Trojan, and ML classification strongly suggests malicious intent. The presence of external URIs and link farms points towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9821

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://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607816348cce7---lufilesimup.pdf In PDF document text
    • http://srihemkuntsahibfgp.org/hemkunt/userfiles/file/31465745461.pdfIn PDF document text
    • http://jamesirvinewedding.com/clients/f/f9/f947a18657f5d77a8fcd192ffd4ccf25/File/dixumadalobanizavopu.pdfIn PDF document text
    • https://ltssinternational.com/res/wysiwyg/file/18924341976.pdfIn PDF document text
    • https://nhahangthanghuong.com/uploads/files/fabikifog.pdfIn PDF document text
    • http://elitaliaweb.it/upload/file/34065415213.pdfIn PDF document text
    • http://rheumatology.instituteupload/content/file/64888084849.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/ggiuddkgh06btfrpbejq1nh5kr/6724061215.pdfIn PDF document text
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/c00bd4a8c83582c9ad3c5b7f154416f8/zosumu.pdfIn PDF document text
    • https://www.hemoroidklinigi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079268f780a2---51463822115.pdfIn PDF document text
    • https://hse.tw/upload/file/fejevizumalegekog.pdfIn PDF document text
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ccc4ecb09f---fedofedevuzesuxudekudiz.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/583fdlusvqhqm8prpir5f8dha2/tinutobivajize.pdfIn PDF document text
    • http://stardentalcare.org/userfiles/file/kuwifudujeniloze.pdfIn PDF document text
    • https://civilkontroll.hu/uploads/file/92723394151.pdfIn PDF document text
    • https://tavio.ru/files/file/41584411358.pdfIn PDF document text
    • https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/6b9de4514b64812fbe51e1a58d585a13/romunupibosug.pdfIn PDF document text
    • http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/bvvpugccebst8vrh7hnouii5j6/jusogakamodilagenedoz.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/16098959c60866---sulotodegukalewozajazifi.pdfIn PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/160a0993ba7cfc---gabajasowoxamevefekamala.pdfIn PDF document text
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/6jldhgieat80o4640abhl3fj46/nelunuxewikomugo.pdfIn PDF document text
    • http://shssailors1969.com/clients/3/36/366f78b21138e0f8005dfe6cc5e09e30/File/zoweva.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=different+departments+in+a+software+company+and+their+functionsPDF link annotation
    • 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_off0000f7a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A9 16676 bytes
SHA-256: 1ab9a55a3eb626be3cc91a53bdfc9c878e4fa5e074a8f6fb54e003901b8133f9

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