Malicious PDF — malware analysis report

Static analysis result for SHA-256 59dfee146e05ba8f…

MALICIOUS

PDF

73.4 KB Created: 2021-09-03 06:13:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 208189c514a636875a3525ee0a95e5ce SHA-1: 1ed76d166b15364e75681e0c333f69e00e53d12d SHA-256: 59dfee146e05ba8f9309762639551bcfad7b39c941b9a8d772f799bf93c33743
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains a link farm pointing to numerous external URLs, many hosted on compromised CMS uploads or disposable domains, suggesting an attempt to direct users to malicious content. No scripts were extracted, but the overall structure and URL distribution indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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 http://vandervalk.reviews/app/webroot/files/userfiles/files/44401858265.pdf In PDF document text
    • https://triptoboloyfoundation.org/editorsfiles/files/31665694856.pdfIn PDF document text
    • https://revapackers.com/wp-content/plugins/super-forms/uploads/php/files/mano5flhsm57vnakrgbn4r88m3/gakimuk.pdfIn PDF document text
    • https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/541b38abc6398d3b5dde2c92c15ccf6f/nalariduxasitivebi.pdfIn PDF document text
    • https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/06f00ef92a1fc2f46482de13da8eb340/226160351.pdfIn PDF document text
    • http://zuche0551.com/upload/file/wupituxofekuviviwij.pdfIn PDF document text
    • https://pingthye.com/userfiles/files/36208249383.pdfIn PDF document text
    • http://3sdent.com/upload/files/56495054868.pdfIn PDF document text
    • https://www.kalirich.com/wp-content/plugins/super-forms/uploads/php/files/ef7n267ljns4cghas5t60pnsu2/bezakivanelaba.pdfIn PDF document text
    • http://ristoranteibucanieri.it/userfiles/files/dagutixusiwejonebuxibe.pdfIn PDF document text
    • https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b301240912c---zenitamurigalikexenawufag.pdfIn PDF document text
    • https://ppuhperspektywa.pl/files/edytor/file/begupisowodulotepaminijag.pdfIn PDF document text
    • https://aduanaldelvalle.com/userfiles/file/fezunon.pdfIn PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba088825a67---fifubudulo.pdfIn PDF document text
    • http://thewesternmist.com/userfiles/file/rilevitezopegizaser.pdfIn PDF document text
    • https://diedacorporation.net/freesiafiles/file/16264620404.pdfIn PDF document text
    • https://clubforeducation.com/FCKeditor/userfiles/file/3502883568.pdfIn PDF document text
    • http://tele-klass.ru/i/upload/files/koxejudepalidokoni.pdfIn PDF document text
    • http://strandedtattoo.com/file/fefiwupoxavebarumado.pdfIn PDF document text
    • http://jjw-led.com/userfiles/file/gomaluxa.pdfIn PDF document text
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ea97394690---40124503204.pdfIn PDF document text
    • http://fujavietnam.com/images/Download/rurolozosif.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=2016+kia+rio+owners+manual+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

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_off0000ba93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA93 17012 bytes
SHA-256: b4abd8a02326be90ad6488a5f7753e27a913cbb9f76be73d6098e44ada31bf6f
font_01_sfnt_off0000e57b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE57B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fd92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD92 11204 bytes
SHA-256: e262a74adc15f723d0d524cd06b85811c628dea9119cd1e917c462df536bf900

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