Malicious PDF — malware analysis report

Static analysis result for SHA-256 74e16cad42182b1d…

MALICIOUS

PDF

78.9 KB Created: 2021-06-25 16:11:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 096c7c4d239645dccc886a6e8bacb7e5 SHA-1: 29702bd91e906a663faf90f6d5cd4fee8c90c160 SHA-256: 74e16cad42182b1dd1a06d161291dfc483068b5663cb019541fed0da40178a34
154 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, specifically identified as a phishing trojan by ClamAV. It contains a link farm pointing to compromised WordPress upload storage and other disposable hosting, suggesting an attempt to redirect users to malicious sites. No scripts were extracted, but the structure and URL patterns indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7769

Heuristics 5

  • 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
  • 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://e-lightingcontrols.com/wp-content/plugins/super-forms/uploads/php/files/9ad56074b4b790f0b90e06650c3f2be1/54472781386.pdf In PDF document text
    • https://sevsport.info/wp-content/plugins/super-forms/uploads/php/files/cb30240adf33b64c903325f93ac2b3a9/sumakatuweviwine.pdfIn PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160944e55650ca---lelegetuxaxi.pdfIn PDF document text
    • https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/2968feb7120e9111bdc6ef205f920f23/sufomezal.pdfIn PDF document text
    • https://angelsstaff.com/uploads/file/dibarudiredigupele.pdfIn PDF document text
    • http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608846d721138---39760581190.pdfIn PDF document text
    • https://www.asahinadigital.com/wp-content/plugins/super-forms/uploads/php/files/5nk9siu2ekhgsq265jrtc9bh48/zipukezunemesero.pdfIn PDF document text
    • https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e57fa4720e---52040176743.pdfIn PDF document text
    • http://morgancountyoh.com/userimages/bafexowoj.pdfIn PDF document text
    • http://churchtextile.com/userfiles/file/98942366326.pdfIn PDF document text
    • https://www.hotelamoha.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a93f5bbf935---50347842323.pdfIn PDF document text
    • http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2f301347f0---liwopuni.pdfIn PDF document text
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160804a1fc4fe8---visixupufebatavuwe.pdfIn PDF document text
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/1607946247fac9---82483559007.pdfIn PDF document text
    • https://aldurra.ly/images-editeur/img/file/49380725847.pdfIn PDF document text
    • http://straps.by/ckfinder/userfiles/files/18359710813.pdfIn PDF document text
    • https://jfefood.com/wp-content/plugins/super-forms/uploads/php/files/e8fb8d29c38e48e1915fd0c530a57565/5214839611.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=you+are+god+alone+from+before+time+began+lyricsPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010383.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10383 11156 bytes
SHA-256: dfd04c089f24863d1ad422243b96c6f10303d32a46d25f2936824001342cb8fa

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