Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d79a95bd807e3ed…

MALICIOUS

PDF

69.5 KB Created: 2021-06-13 19:58:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 92c09037ed0350999747757efbbc02a0 SHA-1: 58ecbcd52da6b0e720bad591eef5ab25fe661a4b SHA-256: 1d79a95bd807e3edb741bb36c71859120097a1dc560cb809b9b78f973337d556
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as a phishing trojan by ClamAV and flagged by an ML classifier. It contains numerous links, many pointing to compromised WordPress sites, and one directly to an IP address, suggesting it's part of a link farm designed to distribute malicious content. The document body, though heavily obfuscated, contains a lure related to Minecraft enchanting tables, indicating a social engineering tactic to encourage users to click the embedded malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8781

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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
  • 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://crysiq.ru/uplcv?utm_term=how+to+make+a+working+enchanting+table+in+minecraft PDF link annotation
    • https://www.abaco-engineering.it/wp-content/plugins/formcraft/file-upload/server/content/files/160942f75db09f---65188266129.pdfIn PDF document text
    • http://kleinschaden.expert/userfiles/file/rulowejixulowu.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a56b8d4cbe---71195971352.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/qcg1qccjjtus7r3g0hpgfcchi8/9482689669.pdfIn PDF document text
    • https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/27kgfr9nuntothd9ceocp07mts/kajowiwezibetorebizab.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607a0e3d91aa6---zutimef.pdfIn PDF document text
    • https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/6a35dc227557bc56cd6bb531c79c7d35/nipafonukuzesakale.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/160c4f737da005---rinubopoxodela.pdfPDF link annotation
    • https://www.djluk.co.uk/wp-content/plugins/super-forms/uploads/php/files/ifi04sp5rupmoojavcne8ned4r/pibisisuwefogipekowejatar.pdfIn PDF document text
    • https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/489dfc32b322568db41f1ea4e283692e/65560532573.pdfIn PDF document text
    • https://www.harasportcenter.com/wp-content/plugins/super-forms/uploads/php/files/j7i0f8mm7hgdgsd3pv7gbs9096/16156712942.pdfIn PDF document text
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/160871f09944ef---puzuzofoni.pdfIn PDF document text
    • https://centrosteadycam.it/wp-content/plugins/super-forms/uploads/php/files/e6a9f5d475accf747a57b0e04bf29389/14169483995.pdfIn PDF document text
    • https://frontiersneurophotonics.org/wp-content/plugins/formcraft/file-upload/server/content/files/1/1607c14abd57c6---nilogipupedesavoras.pdfIn PDF document text
    • https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086f145ac8bd---basolowejef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e706.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE706 5372 bytes
SHA-256: 062867715d4195b3c75afd7d68e8cf8d8b30496b94ccca523d375b8ce8774c5e
font_01_sfnt_off0000f93a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF93A 10584 bytes
SHA-256: e2ed616efcf8abc262b928e3e11e5a28cee0346605c00fd6fa3dda564c03b5d6

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