Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba363c9a02b7057b…

MALICIOUS

PDF

87.1 KB Created: 2021-07-16 03:58:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 3fc3dc09a42248e1b4d60420302a3c46 SHA-1: 7124ca0a3e4d9becfd56e66dcd85c87669d70b72 SHA-256: ba363c9a02b7057b46c1388bd6b5705801c198d75f87268679b25ca37caa08e9
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of external links, many of which point to compromised or disposable domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is a common technique for executing malicious code within PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://gerastar.com/userfiles/file/totis.pdf In PDF document text
    • http://www.alcera.ca/userfiles/file/53855856278.pdfIn PDF document text
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/287e77a036ac182c41fd2cdca795572c/lejubejozulixolew.pdfIn PDF document text
    • https://www.picmephotoboothhire.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160845dd87b348---36849367306.pdfIn PDF document text
    • http://glovimex.com/uploads/ckfinder/files/51258274792.pdfIn PDF document text
    • https://barrierball.cl/ckfinder/userfiles/files/zedozebapiweverulugez.pdfIn PDF document text
    • http://rilta.net/userfiles/files/bifonogutexo.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608eaa561f1ea---deruzopenatuzemajil.pdfIn PDF document text
    • https://karapinler.com/calisma2/files/uploads/54773252405.pdfIn PDF document text
    • http://dichvuwebsites.com/media/ftp/file/jekiwigaronurujoxeriguvuv.pdfIn PDF document text
    • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/c5c1d238460d109ec3224bd7f6a4b7cb/38223512794.pdfIn PDF document text
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/160b3bf0d7059f---bavizumavujobiwije.pdfIn PDF document text
    • http://battlegrouponline.com/app/webroot/js/ckfinder/userfiles/files/20535189240.pdfIn PDF document text
    • https://coluer.ir/documents/file/75631583321.pdfIn PDF document text
    • http://clinicaveterinariabilancino.it/userfiles/files/65635879961.pdfIn PDF document text
    • http://xiangzhuan.tw/upload/files/1589171901.pdfIn PDF document text
    • https://msr-hudsonproperties.com/wp-content/plugins/super-forms/uploads/php/files/7dd32247a2361fbbc808489c685e5dd2/gimulevageditipusaz.pdfIn PDF document text
    • http://e-kva.ru/admin/ckfinder/userfiles/files/kuxuzosepufekozikibaruki.pdfIn PDF document text
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/16082ceab28571---weziseb.pdfIn PDF document text
    • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a2eb5120ddc---boruvadejewipivifuboxoga.pdfIn PDF document text
    • http://aktifithalat.com/resimlerfiles/kizegiwozilamuletuzi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=how+yawning+is+contagiousPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f15a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF15A 17524 bytes
SHA-256: 6603ad2d0c0b41f96216024511e7dcb2952baf3039ee0c2adf08d6d7b54589d2
font_01_sfnt_off00011f73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F73 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001378a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1378A 10420 bytes
SHA-256: 424b11642b1711ca794723b96b39d49c9fe8f6360d27d55f105dbf5833972e42

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