Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e0b0880f4e9789e…

MALICIOUS

PDF

77.9 KB Created: 2021-09-20 08:05:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 7cd30669f6774a862e9c3e3686c61e17 SHA-1: da4259396fadc61da8943f28f129d8e084b6a269 SHA-256: 7e0b0880f4e9789e11c044de0038b4eeaee640df9351eb1b5418904dff3a4b3f
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains numerous external URIs pointing to potentially compromised websites and disposable hosting, suggesting a phishing or malware distribution scheme. The presence of embedded URLs and the nature of the heuristics indicate that the PDF is likely intended to redirect users to malicious sites, possibly to download further payloads or harvest credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://archism.ru/uplcv?utm_term=flutter+%26+dart+development+for+building+ios+and+android+apps PDF link annotation
    • https://xn--80adj7cxa.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/b7136a8de8f35557433f269cf41db03a/mikulopumewegikemaza.pdfIn PDF document text
    • http://elcampoeco.org/FCKeditor/file/12691815468.pdfIn PDF document text
    • https://clinicaabrahaoosta.com.br/ckfinder/userfiles/files/99511868116.pdfIn PDF document text
    • https://clubesolbra.com/uploads/files/6692665311.pdfIn PDF document text
    • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/0c1d42fc92a42593f599bf565303e82f/vezaluzovezorog.pdfIn PDF document text
    • http://kiapelhrimov.cz/UserFiles/File/62111055321.pdfIn PDF document text
    • https://shivajigrihnirman.com/singhania/downloads/file/88572983885.pdfIn PDF document text
    • http://narcisse.sk/editor_uploads/files/91433765107.pdfIn PDF document text
    • http://allier.proximeo.com/ckfinder/userfiles/files/79185250524.pdfIn PDF document text
    • https://aslplastic.com/ckfinder/userfiles/files/10126473888.pdfIn PDF document text
    • http://zenithmetals.com/files/63466510694.pdfIn PDF document text
    • http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613c68c4327b0---kusumekopidofajuw.pdfIn PDF document text
    • http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/16137e598bd141---81086227696.pdfIn PDF document text
    • http://fred-robin.com/ckfinder/userfiles/files/51878759482.pdfIn PDF document text
    • http://211.129.1.225/system/ckfinder/userfiles/files/lesorigarenaxexazotemede.pdfPDF link annotation
    • http://mexxeopaint.com/upload/files/gojuwakifamo.pdfIn PDF document text
    • http://rioairporttransfer.com/ckfinder/userfiles/files/medijaludikebajaropos.pdfIn PDF document text
    • http://faurerom.com/userfiles/file/58393109979.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_off0000d39b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD39B 9524 bytes
SHA-256: f2f76dcc20cdb47be4e7af1b8c6da3d7524d7e20042495ac6fa5341600d7e3ad
font_01_sfnt_off0000e830.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE830 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010042.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10042 16680 bytes
SHA-256: 3857a262818e65d4d962554e2e113f2c87d0c7e06bb9e4ff9806495a9425bf56