Malicious PDF — malware analysis report

Static analysis result for SHA-256 bebe363cd8227382…

MALICIOUS

PDF

83.0 KB Created: 2021-09-07 04:15:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: b41a44b0ab54ca5402233c4b94cdfcbc SHA-1: 78e202f1f78a8c8c23b80fbadd28aa74085ce1dc SHA-256: bebe363cd8227382e9124946eaf3fa4caa713f04784d111f4b90a3f401fabf0c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous embedded URLs that point to compromised websites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and link farm indicators points towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

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://philabc.ru/uplcv?utm_term=frankl+meaning+of+life+pdf PDF link annotation
    • http://heaig.org/editor/ckfinder/userfiles/files/68490347510.pdfIn PDF document text
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16079dd87e9aa9---45298829195.pdfIn PDF document text
    • https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/61109e9d5eb57f945041f174e94a56ce/20090018921.pdfIn PDF document text
    • https://cfaegaianascente.pt/portal/userfiles/files/juxoteluvuk.pdfIn PDF document text
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4cd2002589---bemimipoz.pdfIn PDF document text
    • http://iwaandccareunion.com/clients/57137/File/749490076.pdfIn PDF document text
    • https://santechnikosdarbai.lt/images/files/42145932176.pdfIn PDF document text
    • http://studiomarcheluzzo.it/userfiles/files/dexudevoditagazuwax.pdfIn PDF document text
    • http://www.guaitoli.eng.br/wp-content/plugins/formcraft/file-upload/server/content/files/1611881e37bf9d---kixasilajodezejir.pdfIn PDF document text
    • http://scan3dsaigon.com/upload/files/96343469505.pdfIn PDF document text
    • http://jjmcp.jp/userfiles/Image/file/67498187698.pdfIn PDF document text
    • https://mvmdigital.gr/files/files/67330890501.pdfIn PDF document text
    • https://bokaichenyu.com/upload/files/81478556540.pdfIn PDF document text
    • http://xn--82cac8d3ajrc0gd0bo4a7nf3qg.com/userfiles/files/bawozapugadud.pdfIn PDF document text
    • http://austria-ex.com/images/blog//file/98060799604.pdfIn PDF document text
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/83c3fb049fc04054b55bb24e00ed4ea7/lifumolubu.pdfIn PDF document text
    • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/rv352jekj37mqvutkfior50mon/bifibikejavepa.pdfIn PDF document text
    • http://pogologistics.com/ckfinder/userfiles/files/2412681777.pdfIn PDF document text
    • http://nuyewrecruitment.com/wp-content/plugins/super-forms/uploads/php/files/96b6fc84a4ac3e2f0484ee74f219399d/27433135574.pdfIn PDF document text
    • http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b1a29dc2d79---25381001017.pdfIn PDF document text
    • https://tempatpasang.com/contents//files/delekorewoluk.pdfIn PDF document text
    • https://caribemed.com/userfiles/file/86450361894.pdfIn PDF document text
    • https://almoheetmanpower.com/public_html/userfiles/file/zudamef.pdfIn PDF document text
    • http://maychamsocda.vn/images/userfiles/file/mekowetuzaluv.pdfIn PDF document text
    • http://dichvugiayphep.biz/upload/ck/files/66807400803.pdfIn PDF document text
    • https://endoaccessories.com/wp-content/plugins/super-forms/uploads/php/files/5jcda0q8if6bfbbj4ki01eo3cu/90025584765.pdfIn PDF document text
    • 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_off0000e0ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0AB 10644 bytes
SHA-256: 96c1670c5a827c158ea339ee2de3b0d3fe62f8bb0fc2784471fe0cbd71f55f6a
font_01_sfnt_off0000f8a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8A8 17660 bytes
SHA-256: 4b2b0d46159c2f6183de1c3a12dcbc13e09fb2d0b5e7d43565f85039d94e3773
font_02_sfnt_off00012629.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12629 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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