Malicious PDF — malware analysis report

Static analysis result for SHA-256 036c5555debc47f1…

MALICIOUS

PDF

76.2 KB Created: 2021-07-25 14:37:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 5f1e9778ee1905ebf05697038dbc33fc SHA-1: 81f2d5df0e71809eda8db3f4c712d5fc57333430 SHA-256: 036c5555debc47f16a45db2232084bd08565011f2a2fd2441fea8802c2c24770
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm directing users to multiple compromised CMS upload directories, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of numerous links on potentially disposable or compromised hosting further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://foundryindia.org/userfiles/file/lexejowaraxenogit.pdf In PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160927e4766732---60504185408.pdfIn PDF document text
    • http://constantcontinuity.com/membership/data//files/bojidik.pdfIn PDF document text
    • http://movitecnic.com/ressource/site-image/files/kogepogewuvedebokuxoteno.pdfIn PDF document text
    • https://n95america.com/wp-content/plugins/super-forms/uploads/php/files/627503dc21ab699b814b42a893fa5d86/39754476821.pdfIn PDF document text
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608a33b98ce39---85936173950.pdfIn PDF document text
    • http://sashtraayurveda.com/ckfinder/userfiles/files/15974875942.pdfIn PDF document text
    • https://vishalahospitality.com/ckfinder/userfiles/files/42680621695.pdfIn PDF document text
    • https://kit-veron.my/ckfinder/userfiles/files/60516809435.pdfIn PDF document text
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160ad4709b607e---sigonivomekebajuw.pdfIn PDF document text
    • http://andrelandberg.com/userfiles/file/74599625752.pdfIn PDF document text
    • http://maraulsan.com/ckfinder/userfiles/files/87298489903.pdfIn PDF document text
    • https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/9f44gcqitu50le18kjic8499kt/97629381714.pdfIn PDF document text
    • https://www.vita-organic.eu/admin/ckfinder/userfiles/files/bitunezenekutiwewotemeni.pdfIn PDF document text
    • https://m-co.de/wp-content/plugins/super-forms/uploads/php/files/c9duojik9n67cagnbme0cbqtf7/36865747272.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2772c4eb1c---nazokab.pdfIn PDF document text
    • https://basalyemek.com/ckfinder/userfiles/files/11275496196.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079f1fee5ca8---88498361674.pdfIn PDF document text
    • https://balajitutorial.com/admin/userfiles/file/vifixilasenetonunig.pdfIn PDF document text
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16086e6626abbc---tixodenepubose.pdfIn PDF document text
    • http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/7b18bee1fc0acbebe2c6a428459abfce/96606164860.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ce171c870b---lofetalitafobabivev.pdfIn PDF document text
    • https://hoovermaids.com/wp-content/plugins/super-forms/uploads/php/files/5fcbedbb81aedf3ddf1b35d88b894f5c/soduseli.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=palme+ayt+organik+kimya+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_off0000c3b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3B6 10880 bytes
SHA-256: d5a03b57b5d1bb88082c6627d450b84ebf2f5c7279d5ef5cb5136ae12aa09a62
font_01_sfnt_off0000dca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCA8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f4ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4BA 18144 bytes
SHA-256: d1f7661bcc0a51ae8bca8408ac6109b70a7c837338b74b3f0d70365ac6249d40

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