Malicious PDF — malware analysis report

Static analysis result for SHA-256 0deeef594aa269d5…

MALICIOUS

PDF

86.4 KB Created: 2021-07-24 21:51:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 13d211a4d9bd8da55a466d1a5ff04fd4 SHA-1: a644c8dfc6587189d3b71ed65717de1c46c225ed SHA-256: 0deeef594aa269d5678c8fb8e6fea7ec0dbb84f0e37b519fecc8c97f6df92793
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to potentially compromised websites, indicating a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malicious document delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9905

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 http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/160705a674b293---848834361.pdf In PDF document text
    • https://steammining.com/userfiles/file/87169520398.pdfIn PDF document text
    • http://bachova-terapia.sk/images/file/63078945610.pdfIn PDF document text
    • https://clubelsendero.com/img_pag/file/vojizuwusefegop.pdfIn PDF document text
    • https://bevelec.com/bevelec/dossierMois/file/fusilatibugudogodafajegen.pdfIn PDF document text
    • http://feriaalainversa.com/uploaded/files/basotixowunilateselu.pdfIn PDF document text
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/27065eb3e2d5c8b8a87e05680e6b2d9e/46567557984.pdfIn PDF document text
    • https://capitaleny.com/wp-content/plugins/super-forms/uploads/php/files/84ff2ed265971cfc7a6a3f471f78deb3/88874527549.pdfIn PDF document text
    • http://xn--80aafbkbafwdti1ahihccrg.xn--p1ai/pict/file/92486309462.pdfIn PDF document text
    • https://ipekyolumedya.com/resim_galeri/file/fudaboposidurisezak.pdfIn PDF document text
    • http://superfishinglewood.com/uploads/files/10659303957.pdfIn PDF document text
    • http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1c8d8458e2---sofubozujozaxadopu.pdfIn PDF document text
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609c6bb1670cc---wazifijuwamuzusolu.pdfIn PDF document text
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/b98f88d7c122a305b96496687d280433/jejefarojaki.pdfIn PDF document text
    • https://riolospettacoli.it/filesUploads/file/558883490.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f04d4304ccd---81975807776.pdfIn PDF document text
    • https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/48fv1lfker7lj08nn3nnc037ip/ropibimuwazad.pdfIn PDF document text
    • https://abctranslink.com/ckfinder/userfiles/files/kudowolaxetumilovu.pdfIn PDF document text
    • https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160ac207443b48---81941351854.pdfIn PDF document text
    • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5ebfe4eaa3---65192976361.pdfIn PDF document text
    • https://vallejardin.com/wp-content/plugins/super-forms/uploads/php/files/f617867ef888d4f0521c23cde5107604/76639970195.pdfIn PDF document text
    • https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afd27f73c4e---82695931725.pdfIn PDF document text
    • http://joelcsimonesq.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/fagumivomuluro.pdfIn PDF document text
    • https://eobliecky.sk/userfiles/file/99813352904.pdfIn PDF document text
    • http://cameralehiep.com/hinhanh_fckeditor/file/96330142570.pdfIn PDF document text
    • http://zigzagontwerp.nl/sites/default/files/file/vigotasofisokozabowi.pdfIn PDF document text
    • http://szpital-sulecin.pl/images/fckfiles/file/fixovifoligiminimori.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=dramatic+irony+in+macbeth+act+3+scene+5PDF 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_off0000ee18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE18 16684 bytes
SHA-256: f76327c0ee9ec6274f9a79da9ae83f624c2bdf64000d36e2a1175c0cb4dc74f8
font_01_sfnt_off00011996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11996 11012 bytes
SHA-256: 2f6348bc1578bdf66d892eb5f7c4d42d2aa71425a306dbb97a672967d8966a48
font_02_sfnt_off00013319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13319 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1