Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeddc50d804bb12a…

MALICIOUS

PDF

77.9 KB Created: 2021-09-08 04:35:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 992ed4b1b7887e73ff62699f96d32ce9 SHA-1: 3a52060ae98f3351b213252868bb87f70590babf SHA-256: eeddc50d804bb12ae0a78faa072d98bd9e7e89d5dc69b41e0cc208371888854d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links pointing to compromised websites, indicating a likely phishing or malware distribution scheme. The PDF structure suggests it's a link farm designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c137af4c1ab---42076980017.pdf In PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/160dc06f57238f---givedemitotaveruvuwalate.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/bbeucmuomc91h4adce8nculfvo/wumadedu.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/b32n80th69ho72vtcpf4i11lns/6418421659.pdfIn PDF document text
    • http://changju-hotel.com/CKEdit/upload/files/86215089980.pdfIn PDF document text
    • https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/753a8f35a9d54b24673419026dede8ad/nesesikapizonotanuxumu.pdfIn PDF document text
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/81215978ab0d234385a3c466ea7fa448/minoradoxexitisa.pdfIn PDF document text
    • http://agcslohian.com/userfiles/file/jazaxidiliwujefexu.pdfIn PDF document text
    • https://chaplains-camps.org/upload_picture/file/63587585473.pdfIn PDF document text
    • https://triptoboloyfoundation.org/editorsfiles/files/rowev.pdfIn PDF document text
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1607b5704af846---tiburelidufamenusid.pdfIn PDF document text
    • http://gildiamasterov.ru/userfiles/file/31720336187.pdfIn PDF document text
    • http://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/c1597e63011670b72e853206ae641834/xasevenelubemadogomedotim.pdfIn PDF document text
    • https://dolnoslaskialarmsmogowy.pl/imgturysta/files/7754805904.pdfIn PDF document text
    • http://svx.su/ffile/file/turexijumatuv.pdfIn PDF document text
    • http://pbsdeltarho50events.org/clients/d/dc/dc3fcb918f61c9276c5829b035df2abc/File/bodejokatexukemed.pdfIn PDF document text
    • https://camgloberealtor.com/userfiles/file/pusojetazukeju.pdfIn PDF document text
    • http://rowerowaszkola.pl/imgturysta/files/37613585782.pdfIn PDF document text
    • http://jpmoto.biz/upload_picture/baletikoketetuz.pdfIn PDF document text
    • https://digireg.cn/upload/rejizagozuk.pdfIn PDF document text
    • https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611a8c109398c---82600736313.pdfIn PDF document text
    • https://ljlconst.com/admin/images/file/kotuweniguxo.pdfIn PDF document text
    • https://tranduongauto.com/app/webroot/files/images/pages/files/45824417221.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=untethered+soul+book+pdfPDF 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_off0000cca6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCA6 10680 bytes
SHA-256: 0c1e5965946c1330609f63a24ed91def4e258b12c4054fba99fa0f33b67b571d
font_01_sfnt_off0000e4d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4D9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCEB 17416 bytes
SHA-256: f53fa994ba92c01de640ec4aa2dde8ef6f697054058be4aa630ae2669bdd1ac0

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