Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c80e2936e9e7e06…

MALICIOUS

PDF

83.1 KB Created: 2021-09-05 21:37:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 93ebc0cae819a8d82926c4d4fe6e096d SHA-1: 71110473420ec744cfa043996e11db076b373229 SHA-256: 2c80e2936e9e7e06924979dad0dd3b2acec42b45bff54e98d728f6c35867e9da
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm with numerous URLs, many pointing to compromised or disposable hosting, suggesting an attempt to lure users to malicious sites. The presence of external URIs and link farms indicates a likely phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9911

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://smsalumni1971.com/apadmin/uploads/userfiles/files/jemimarow.pdf In PDF document text
    • http://maekuangudomthara.com/ckfinder/userfiles/files/kezetajokedigafazur.pdfIn PDF document text
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074744adcc04---27304861051.pdfIn PDF document text
    • http://oasis-inwaste.asia/files/file/59552597899.pdfIn PDF document text
    • https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3f2e4070f1---24909588602.pdfIn PDF document text
    • https://pfgmm.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a8a974f2d45---11749050755.pdfIn PDF document text
    • http://turatabor.hu/media/kovox.pdfIn PDF document text
    • https://fceresources.com/ckfinder/userfiles/files/89847332920.pdfIn PDF document text
    • https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/a41a318678e1a541c629724c7b5215ca/87153863822.pdfIn PDF document text
    • https://contabil-fiscal.ro/mm/file/jotiv.pdfIn PDF document text
    • http://irk-yoga.ru/upload/files/resuvajazimufibuvaka.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608272e5bfc66---felijatukimol.pdfIn PDF document text
    • https://cafemocion.com/userfiles/file/49389790507.pdfIn PDF document text
    • https://novzelandiya.ru/ckfinder/userfiles/files/63250409949.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609dad52226cb---52834623088.pdfIn PDF document text
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611334dd4c663---48349361129.pdfIn PDF document text
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/5b6242fe3e893974632a39c34a06a8a6/jolunezetili.pdfIn PDF document text
    • http://garantc.ru/userfiles/file/dopefugulunomij.pdfIn PDF document text
    • http://www.companyforte.com/imagenes/editor/file/58788347510.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16082ae60c1599---20958249219.pdfIn PDF document text
    • https://taevlingar.se/images/pages/file/98965329502.pdfIn PDF document text
    • http://aylabawadi.ae/userfiles/file/24261572591.pdfIn PDF document text
    • https://chetanaus.org/bheru/uploadfiles/file/meganupewonopivoxexade.pdfIn PDF document text
    • https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085c7d8a9ab1---30671648288.pdfIn PDF document text
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609b528785554---74815722016.pdfIn PDF document text
    • http://xn--80aejmo0alc.xn--p1ai/ckfinder/userfiles/files/86385003765.pdfIn PDF document text
    • http://xn--80aab8aioy.xn--p1ai/userfiles/file/kitereges.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=african+countries+and+their+colonial+masters+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_off0000dfb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f7c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C2 17228 bytes
SHA-256: 74082c8f783bf653cc54b798724afda1e455ea23f3119fb788c862ab680f0025
font_02_sfnt_off0001249e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1249E 10964 bytes
SHA-256: 4dcc2e3b9bbffbca66135ff127d80904a54a78be905165cdb3c75ab43a7fb86f

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