Malicious PDF — malware analysis report

Static analysis result for SHA-256 e96d518b00fa8465…

MALICIOUS

PDF

80.0 KB Created: 2021-09-12 20:35:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 4052f4da7a0505de0d7afef0127eb485 SHA-1: 20fe089ff65b07b52c608585310995723bf7a32d SHA-256: e96d518b00fa846569612cfb0d9eee478edb30b3b3e64c372f54200d27d363f2
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many pointing to compromised WordPress sites and disposable hosting, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via these external URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 7

  • 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://drafthe.ru/uplcv?utm_term=opencv+manager+apk PDF link annotation
    • http://opgzvh.hr/upload/file/51160326229.pdfIn PDF document text
    • https://emmaushuis.org/pages/89451836752.pdfIn PDF document text
    • http://villaroyalenews.com/userimages/dupixanobedijevasokofo.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bc5c406d22---42673150765.pdfIn PDF document text
    • http://rent2day.ca/ci2/userfiles/files/pevisaz.pdfIn PDF document text
    • http://vizit-k.net/uploads/editor/files/45333982671.pdfIn PDF document text
    • https://yellowstonewildlife.com/26929009319.pdfIn PDF document text
    • https://dunaweb.co/bg_image/files/21727061234.pdfIn PDF document text
    • http://verypool.cn/images/upload/File/8015091415.pdfIn PDF document text
    • http://thietbimaugiao.vn/Images_upload/files/65599674843.pdfIn PDF document text
    • https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137eb93812f8---gozosufisoterelutumuv.pdfIn PDF document text
    • http://bresky.cz/res/file/39581378224.pdfIn PDF document text
    • http://rayanchem.com/d/files/luzamuzonewaguseji.pdfIn PDF document text
    • https://arte-salon.ru/upload_picture/sizunefujoxiwikulatexuzok.pdfIn PDF document text
    • https://www.renfrewareahealthvillage.ca/ckfinder/userfiles/files/rilako.pdfIn PDF document text
    • https://komunalno.vrgorac.hr/files/39718682152.pdfIn PDF document text
    • http://mazurubezpieczenia.pl/zdjecia/fck/file/60269008254.pdfIn PDF document text
    • https://trexanh.net/upload/files/nutoxaj.pdfIn PDF document text
    • http://khiconghoixuancong.com/Khicong/admin/userfiles/file/26564862973.pdfIn PDF document text
    • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/ef5tcps71l7ggf0mv93ale1ia6/nanatavosixogedaz.pdfIn PDF document text
    • https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/863a3a284062fde6b2212a0b051fe7b6/ripirejomoxozerijaweb.pdfIn PDF document text
    • https://panegovernance.com/ourprojects/chowki/UserFiles/file/15749163572.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_off0000d3ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3AE 10376 bytes
SHA-256: 9113ff78603356effa90a0f8123f7a07bdf72ceb4af969f1fa16e6c925ac2255
font_01_sfnt_off0000eb2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB2B 18300 bytes
SHA-256: 1c2e1e93956d87fcbbc73691ab321e3f60826dcee74a919c13f82d621f1f1a67
font_02_sfnt_off00011a94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A94 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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