Malicious PDF — malware analysis report

Static analysis result for SHA-256 e96720b1b96e5be2…

MALICIOUS

PDF

73.4 KB Created: 2021-09-09 08:23:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 5a577f1bf4422829530cb4aa38864996 SHA-1: ebe277f4a18b6fd16f87d8601d804cc7cae4b97e SHA-256: e96720b1b96e5be2e4cadcde68a112eaf7933ebc6173a8005e12eb2de18b40f7
154 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting. The ClamAV detection and ML classifier indicate malicious intent, likely phishing or malware distribution. The document's structure suggests it's designed to lure users into clicking links that lead to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5903

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://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/9a512f008cf7177eed5001515e5d0927/pazuxijifavoribe.pdf In PDF document text
    • http://medeeatour.ro/mm/file/dokemawewofixibekil.pdfIn PDF document text
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/8f1cb7588462f6abf60f9f397d7dff2c/65244554066.pdfIn PDF document text
    • http://laboratoriodiprogettazione-ve.it/userfiles/files/kizijoso.pdfIn PDF document text
    • http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/16132d7009acae---94780307029.pdfIn PDF document text
    • http://technology-mp.it/userfiles/files/69895145829.pdfIn PDF document text
    • http://naosgym.com/userfiles/files/zufeferexexufasof.pdfIn PDF document text
    • http://ed-union05.ru/files/file/jamekarubamotitizosema.pdfIn PDF document text
    • http://446888.top/userfiles/file/59722476670.pdfIn PDF document text
    • http://english-island.pl/wp-content/plugins/super-forms/uploads/php/files/pl27276238un1tooidueso73a6/sesuduke.pdfIn PDF document text
    • https://lanegarrett.net/userfiles/file/xumefubofamugajir.pdfIn PDF document text
    • https://reviewz.eu/app/webroot/files/userfiles/files/nesujesetepes.pdfIn PDF document text
    • http://tradeweb.es/userfiles/file/70284300958.pdfIn PDF document text
    • http://fijiembajak.com/uploads/ck_uploads/files/52593131272.pdfIn PDF document text
    • http://bilateralmatters.org/userfiles/file/bugibevuxeduvum.pdfIn PDF document text
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/3eea9763f8144047c7c5077d88ffb4e6/nepumumifatirunura.pdfIn PDF document text
    • https://acconpriti.com/ckfinder/userfiles/files/tapemovaj.pdfIn PDF document text
    • https://smwebtechnology.com/arishayurveda.com/userfiles/file/58608098848.pdfIn PDF document text
    • https://tapuionoticias.com/ckfinder/files/75507453286.pdfIn PDF document text
    • https://ubitanduk.com/contents/files/70928660195.pdfIn PDF document text
    • https://joinvita.com/neu/userfiles/file/63920944117.pdfIn PDF document text
    • http://kprmk.pl/userfiles/file/45818796931.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=security+analysis+6th+edition+pdfPDF 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_off0000cffe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFFE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e815.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE815 11176 bytes
SHA-256: 6c1f49a713cb12162ed973e4d9d917911ed112be7460629eda6212a9e05f1e0c

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