Malicious PDF — malware analysis report

Static analysis result for SHA-256 80a9f37c78a71522…

MALICIOUS

PDF

80.4 KB Created: 2021-08-09 11:03:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 01ed8257e82e572dec2f632a58350da7 SHA-1: 9d3dbd340ecb15b3788115bd93ed738a15ff0987 SHA-256: 80a9f37c78a71522cc9e15ac251fcf19bee3d55e0dac0c6d455ea5e5e0dba9ca
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It functions as a link farm, containing numerous embedded URLs that point to various websites, some of which are hosted on compromised WordPress installations. The presence of these links suggests an attempt to lure users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7309

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://archism.ru/uplcv?utm_term=python+3+bangla+book+pdf PDF link annotation
    • https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/ero8b6vrero0d79g96njmdv7bn/simide.pdfIn PDF document text
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607200af3e4f3---7384851422.pdfIn PDF document text
    • https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/982fe34ea59b2f7f7c0e917b1a43602e/56226389969.pdfIn PDF document text
    • http://bygreenpure.com/userfiles/file/gufibizekukarakaleganebe.pdfIn PDF document text
    • http://prosquash.by/data/makamepadafotaxixa.pdfIn PDF document text
    • http://ankamet.com/userfiles/file/54013796518.pdfIn PDF document text
    • https://al-farh-iq.com/upload/userfiles/file/79928687199.pdfIn PDF document text
    • http://laptopplus.be/app/webroot/files/userfiles/files/37014402342.pdfIn PDF document text
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160d9e22a02c25---vuvalefugazawovukozuzit.pdfIn PDF document text
    • http://szakkepzosiklos.hu/upload/file/77925724018.pdfIn PDF document text
    • http://www.highlandmetals.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160ab864013a4c---gokomolufowofar.pdfIn PDF document text
    • https://nutricionintravenosa.com/wp-content/plugins/super-forms/uploads/php/files/586f8d18417dd00d335ea85b8ae481f1/57629449646.pdfIn PDF document text
    • http://hrzservices.com/uploadfiles/file/xamopew.pdfIn PDF document text
    • http://langeline.com/ckeditor/upload/files/58619404051.pdfIn PDF document text
    • http://m3hotels.com/userfiles/file/zilinuvew.pdfIn PDF document text
    • https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb7aa80d55c---newuzevegogeviwar.pdfIn PDF document text
    • https://acrgroup.nl/userfiles/file/mitinofajijopelirafer.pdfIn PDF document text
    • http://gewoongroen.eu/app/webroot/files/userfiles/files/45226814446.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f4f5c6d6379---65463582966.pdfIn PDF document text
    • https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/2se1m3hats2p7jrs40ubqmvji2/kanuxolibekimit.pdfIn PDF document text
    • https://dgaspcsm.ro/ckfinder/userfiles/files/25607735745.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5bfc147d5e---85698713659.pdfIn PDF document text
    • http://kirche-treuen.de/UserFiles/File/92793436038.pdfIn PDF document text
    • https://laughteronlineuniversity.com/images/upload/files/33579823789.pdfIn PDF document text
    • http://littlefreddieking.com/clients/65037/File/97709964149.pdfIn PDF document text
    • https://observatoire-omic.org/documents/file/20761516218.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_off0001178a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1178A 10804 bytes
SHA-256: a977733ea5138df8de0a34461a6166c49e5be981ef45c7fadfae01538c4d3e72

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