Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe61bf5a0b0b79ac…

MALICIOUS

PDF

88.6 KB Created: 2021-08-06 18:11:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 03f0dbc50d1ee1ae8cbe1f6f8163a547 SHA-1: a1a462b5ae4a47ee111678b934aa6364755bc885 SHA-256: fe61bf5a0b0b79ac6f3435da9f23fac1ccd87732c83a791c30eaf544517a56fc
156 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics as malicious, including a critical ClamAV detection and a high ML score. It contains numerous links, many pointing to compromised WordPress sites and disposable hosting, suggesting it's part of a link farm designed to distribute malicious content. The presence of these links and the overall structure indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 6

  • 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
  • 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.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/aca8d3835ea42a3858ac79e87e2db1e0/24745550931.pdf In PDF document text
    • https://prolocolidodisavio.org/ckfinder/userfiles/files/kewogajipusosuv.pdfIn PDF document text
    • http://yogo110.com/userfiles/file/40781897472.pdfIn PDF document text
    • http://madiran-cruduparadis.fr/ckfinder/userfiles/files/35772322392.pdfIn PDF document text
    • https://penzion-palice.cz/content/80548129244.pdfIn PDF document text
    • http://dongshengcable.com/images/upload/File/81654439415.pdfIn PDF document text
    • http://e-cluny.cz/UserFiles/file/tawukogejetonuzosu.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085cd257eac0---81928331563.pdfIn PDF document text
    • http://tanriovermensucat.com/uploads/genel/files/venetuso.pdfIn PDF document text
    • http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607c922782974---51906123784.pdfIn PDF document text
    • http://kondicionery-dolgoprudny.ru/upload_picture/file/99828658493.pdfIn PDF document text
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/7v001p15p6ncbvqed62slohfko/98347221882.pdfIn PDF document text
    • http://jagatjyotischool.org/jagatjyotischool/userfiles/file/giwofuvatu.pdfIn PDF document text
    • https://thetitangroup.ca/wp-content/plugins/super-forms/uploads/php/files/c6dee3d7aaf5df685d79751016d2983b/71431473656.pdfIn PDF document text
    • http://conomiya.com/images/uploadedimages/file/lejori.pdfIn PDF document text
    • http://vom-ragnaroek.de/uploads/file/xugidep.pdfIn PDF document text
    • http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607af6409d4d5---82978812233.pdfIn PDF document text
    • https://pecsikult.hu/files/file/pizoruwawaxu.pdfIn PDF document text
    • http://www.jobsincrete.gr/images/_user_na/file/rufekekadedifoto.pdfIn PDF document text
    • http://willtorock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088cfd7b2bff---38088396704.pdfIn PDF document text
    • http://shannonlakeestates.org/fck_images/file/vixanuwowofifudiku.pdfIn PDF document text
    • https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16073200db4ad3---46731529920.pdfIn PDF document text
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/f773df0706c1984b381af54b8da00655/lebodiga.pdfIn PDF document text
    • https://evocative.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607fb47723984---guxaxo.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160bb3fd0c86ef---97286292732.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=did+carrie+die+in+the+woman+in+cabin+10PDF 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_off0000f2e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010af9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AF9 10824 bytes
SHA-256: 833fd90965d1aa369d1655c7eaa7eb20d86de969d8200f7065c46bf52c6e5eec
font_02_sfnt_off000123c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123C7 18044 bytes
SHA-256: 6c4a2deda4df4c2190158e97c70aee0ac9ba308e84243f5ab19628fc85607b3b