Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6ee01eaf6b3c7b3…

MALICIOUS

PDF

76.2 KB Created: 2021-09-02 14:26:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: b09b163453fc94f2621e25230bbff630 SHA-1: a77b0c0a0fb2082202a2f6f9699c0576d7bb420f SHA-256: d6ee01eaf6b3c7b3f1174c1b35ec6d752f11688b4e95a8e17fcec1e4cb16f0be
154 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains numerous embedded URLs, many of which point to compromised CMS uploads or disposable hosting, suggesting a phishing or malware distribution scheme. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7390

Heuristics 5

  • 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
  • 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://archism.ru/uplcv?utm_term=indicaciones+de+trasplante+de+medula+osea+pdf PDF link annotation
    • https://gwynharmon.com/home/gwyn/public_html/ckfinder/userfiles/files/34440779594.pdfIn PDF document text
    • http://ilksolar.com/Images/Media/files/mekinogogixupitoduwezisex.pdfIn PDF document text
    • http://blueyee.com/upload/file/130124047037.pdfIn PDF document text
    • https://keralatemples.info/ckfinder/userfiles/files/rinapuvuvivipinoriji.pdfIn PDF document text
    • https://pearproperties.in/userfiles/file/72766896914.pdfIn PDF document text
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/160772cd1c39cf---ripapowoj.pdfIn PDF document text
    • http://ahxxzx.com/userfiles/202105/file/vosiwomurugupidaropowu.pdfIn PDF document text
    • https://weblative.com/wp-content/plugins/super-forms/uploads/php/files/0tjje35fgecurvhfo3c00lcmsh/72501540424.pdfIn PDF document text
    • http://sherwoodonionfestival.com/ckfinder/userfiles/files/jeliwotikese.pdfIn PDF document text
    • http://bisenzia.it/userfiles/files/fanopulirifuxubamipofewuj.pdfIn PDF document text
    • https://www.alignerco.ca/wp-content/plugins/super-forms/uploads/php/files/63d253eeacd0b8be1706c1d3f7bce267/73593998141.pdfIn PDF document text
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/ls0665hf8s07hik62nfjlsicm6/zopazuvujipa.pdfIn PDF document text
    • http://mindennapi.hu/upload/file/9082634308.pdfIn PDF document text
    • https://ltssinternational.com/res/wysiwyg/file/85794387257.pdfIn PDF document text
    • http://hulstcustoms.ru/uploads/files/61615413555.pdfIn PDF document text
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/d8475d5ae16c00a63df3474177d36a82/loxivemakimaxekatetu.pdfIn PDF document text
    • https://amatnieks.com/pictures/image/xevak.pdfIn PDF document text
    • https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/44336f16fd144fe27c72a3a2fa1f9560/44207619872.pdfIn PDF document text
    • http://zulassung4you.de/bilder/file/18436883450.pdfIn PDF document text
    • https://www.medicalart.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/161157fb00b751---puwunusovun.pdfIn PDF document text
    • https://adbetelparaguay.com/wp-content/plugins/super-forms/uploads/php/files/130e3e453ef2f47820e9cf2edc5e2ae2/29567517164.pdfIn PDF document text
    • https://pointsourcegroup.com/wp-content/plugins/super-forms/uploads/php/files/52cb67b631a393f7067d8c4684ff505f/fovumafo.pdfIn PDF document text
    • http://themultifold.com/wp-content/plugins/super-forms/uploads/php/files/1v07f6e1kmhrvjrjmp1oupd537/fulufuwitokumunodipad.pdfIn PDF document text
    • https://prosaison.fr/userfiles/files/pobilevejitebarubilena.pdfIn PDF document text
    • https://pecsikult.hu/files/file/bumoza.pdfIn PDF document text
    • 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_off000105f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105F9 19176 bytes
SHA-256: 7c991210b0f7d83c29c151107c527fe8a6b87fc926e5b7c922d278c6e240a0d9