Malicious PDF — malware analysis report

Static analysis result for SHA-256 47af716724fe1390…

MALICIOUS

PDF

72.2 KB Created: 2021-09-18 12:21:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: f7b493c1db1cfbe7dfb530a6b5d52820 SHA-1: 0a7b5e924d43a721f88116311a8174c5d435cc5d SHA-256: 47af716724fe1390c57e9a9fdbb6e2904f8f64978f5bcad941db26f8ac2c0e0c
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to disposable domains, a common tactic for phishing or distributing further malware. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic specifically flags this behavior. While no scripts were directly extracted, the ML classifier and ClamAV detection strongly indicate malicious intent, likely involving JavaScript execution within the PDF to facilitate redirection to these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://inwebjor.ru/uplcv?utm_term=adobe+draw+android+apk PDF link annotation
    • https://kaisar168.com/contents/files/lovefinegabatinojera.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/3677368139.pdfIn PDF document text
    • https://laughteronlineuniversity.com/images/upload/files/92311366027.pdfIn PDF document text
    • http://theeultimatenetworker.com/ckfinder/userfiles/files/vezosunilanelegowiziwa.pdfIn PDF document text
    • http://ipceurope.com/assets/file/nuvelazazonew.pdfIn PDF document text
    • http://jarauwerdaenzn.nl/userfiles/file/rebakop.pdfIn PDF document text
    • https://arabadvertise.com/userfiles/files/melad.pdfIn PDF document text
    • http://biblioteka-belzec.pl/upload/files/fuvapan.pdfIn PDF document text
    • https://pgp-puh.hr/fck_media/file/48204197381.pdfIn PDF document text
    • http://gwardiajuvenia.pl/zdjecia/fck/file/tananedariz.pdfIn PDF document text
    • http://appli-veolia.net/ckfinder/userfiles/files/96583162527.pdfIn PDF document text
    • http://briztravel.com/upload/files/jowogurokobagake.pdfIn PDF document text
    • http://kaies.net/upfiles/2109112308148272002hbx4g.pdfIn PDF document text
    • http://thaiboxes.com/piceditor/file/14287443142.pdfIn PDF document text
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/161309ac0f32cd---ruzivudefopavunozikon.pdfIn PDF document text
    • http://www.pantonerestauri.com/ckfinder/userfiles/files/panemigifota.pdfIn PDF document text
    • http://getsolarny.com/userfiles/file/bozababaliwi.pdfIn PDF document text
    • http://legalinet.eu/userfiles/files/kafuxaluvop.pdfIn PDF document text
    • http://zentrumok.com/userfile/files/gukesezaxe.pdfIn PDF document text
    • http://scandinavia-ex.com/images/blog/file/pikese.pdfIn PDF document text
    • https://bdlvn.com/steel/upload/files/pabis.pdfIn PDF document text
    • http://autowagon.it/userfiles/files/97974736412.pdfIn PDF document text
    • https://jmbarrenetxea.soinuenea.eus/files/galeria/files/xuzuwozanubofuginenexax.pdfIn PDF document text
    • https://widepolymers.com/userfiles/file/413298455.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_off0000b9f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9F1 16328 bytes
SHA-256: b80865882dbd52b20e48599c2cb4d7df3d20e896a1ef783f40dfaeb30c3db534
font_01_sfnt_off0000e386.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE386 10372 bytes
SHA-256: fa52ef8d2f19baec49f584c1f44d847090c759be65f5fe063cd2a26906760f96
font_02_sfnt_off0000fae1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAE1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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