Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e0ffdf2e727d4ca…

MALICIOUS

PDF

78.7 KB Created: 2021-09-02 06:48:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: b2b2fbf6c2d7cc3806ec3615cdd6760f SHA-1: d10df281e745aa9ba2053b6dc8bae376d7f427fa SHA-256: 2e0ffdf2e727d4caebae042bf1903e23450656374542cf43c6f96522ae0f5dfb
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories and disposable hosting domains, indicating a link farm designed to redirect users to potentially malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/borekfv9hk7uqecl55d7moc610/wodofumomuwuxemi.pdf In PDF document text
    • http://www.gainerwindows.ca/wp-content/plugins/super-forms/uploads/php/files/is1mjb8ggtvvql6al22kmsd7n1/dulatezafokesapoxoga.pdfIn PDF document text
    • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/dca96a737f742078e76c1b480efc2724/88220216015.pdfIn PDF document text
    • http://bifruit.mk/ckfinder/userfiles/files/nudelirofotonezitadav.pdfIn PDF document text
    • https://bandotrading.com/uploads/file/mokibo.pdfIn PDF document text
    • http://fratellilongoni.com/userfiles/files/naniv.pdfIn PDF document text
    • http://projecthouse.bg/uploads/CKfinder/files/43978356303.pdfIn PDF document text
    • http://restavratorstvo.com/ckfinder/userfiles/files/xipewegatozabetegaloxeb.pdfIn PDF document text
    • https://www.peeryhotel.com/wp-content/plugins/super-forms/uploads/php/files/50a08ae060c22859fb817d84a8b896b8/xisemalejagotabasapawij.pdfIn PDF document text
    • https://angkortaxiservice.com/userfiles/file/47838150278.pdfIn PDF document text
    • https://narellesastro.com/userfiles/files/25981770806.pdfIn PDF document text
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/ad6c73764c943cc928e2efd636e96826/wujumemowibuke.pdfIn PDF document text
    • http://computergramm.com/userfiles/file/babodoxikakikoseva.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/160c9c1fc982c4---kukokebodij.pdfIn PDF document text
    • https://intekcanada.com/ckfinder/userfiles/files/zawivexufe.pdfIn PDF document text
    • http://balone.net/_upload/file///2768135779.pdfIn PDF document text
    • http://3sdent.com/upload/files/70510811441.pdfIn PDF document text
    • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1611cf3b7b05c7---94704482676.pdfIn PDF document text
    • https://soudurelauziere.com/upload/editor/file/labovogafen.pdfIn PDF document text
    • http://the-bom.kr/upfile/files/8802870251.pdfIn PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c983f6997d1---83122705094.pdfIn PDF document text
    • http://www.luna1956.com/images/library/File/23800325168.pdfIn PDF document text
    • http://ewhamd.net/upFiles/ckeditor/files/60049896799.pdfIn PDF document text
    • https://hantverkarenisandby.se/UserFiles/files/jamosamelexaramokog.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=the+last+stand+dead+zone+guidePDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cfaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFAF 16508 bytes
SHA-256: dd3e34cbe39f95c0139147fcd6d0829ff4f53db82efc2f6c5e5d55fa75e443fc
font_01_sfnt_off0000fa4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA4F 10552 bytes
SHA-256: 7f96d75ddae43b5ed7fcbb267347b3a3d90fbf7ffc0b4e424d01580a381bc4b1
font_02_sfnt_off00011223.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11223 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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