Malicious PDF — malware analysis report

Static analysis result for SHA-256 30faff38ca3a21a6…

MALICIOUS

PDF

85.1 KB Created: 2021-07-02 09:19:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: ae8fb4083601598b98a5baa844819e34 SHA-1: 0565d63fd587636a525b2f45b8374c8783e7ce26 SHA-256: 30faff38ca3a21a65ec50ed636f18fab4cfd09495f50050b9a9c19e02e5ba88c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious. It contains numerous links pointing to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a phishing or malware distribution campaign. The presence of embedded URLs and the nature of the heuristics indicate that the primary function is to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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 https://irlanc.ru/uplcv?utm_term=home+delivery+dry+cleaning PDF link annotation
    • http://himalayakebab.com/shipinc/userfiles/files/lakavovupu.pdfIn PDF document text
    • http://altiro.nl/home/tjerk/file/podebagar.pdfIn PDF document text
    • https://anukulagrotech.com/ci/userfiles/files/fagazepadabatudoroxapak.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c73c5aab320---liwovobojavigawiba.pdfIn PDF document text
    • http://am-assets.com/aom/magnolia/userfiles/file/41947505685.pdfIn PDF document text
    • http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085183a346d0---33154340796.pdfIn PDF document text
    • http://www.empresasdelimpeza.info/wp-content/plugins/formcraft/file-upload/server/content/files/160a11aecb00be---vuwuvomafuzojisivo.pdfIn PDF document text
    • http://fouladsazanco.com/Upload/file/nurizozabefin.pdfIn PDF document text
    • http://xn--365-pn7mwb654m2qn.com/ckupload/files/588121413.pdfIn PDF document text
    • http://patroha.hu/file/talikivikezazeni.pdfIn PDF document text
    • http://daiichihr.com/uploads/news_file/49524275374.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/bce07dfe7a559dd41bc0eb56260496f9/xuvonetanewivowabijazib.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/160a8ce6eefebc---rumisezuvelubaji.pdfIn PDF document text
    • https://cananalimdar.com/wp-content/plugins/super-forms/uploads/php/files/qfsjkloid8ep4l52l5a3klqthf/53680671710.pdfIn PDF document text
    • http://cecev.com/stockages/files/vipuvasuzuxonulilofipojiz.pdfIn PDF document text
    • http://www.k-24.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a906e9250bf---30107028289.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/7d30a38bd2bdb70f7fcd67825e5876e6/rugazukigetewimuv.pdfIn PDF document text
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f8d2664f21---6786104359.pdfIn PDF document text
    • https://aashianarealty.com/file/busilelafujiwogexuf.pdfIn PDF document text
    • https://amatnieks.com/pictures/image/61589456765.pdfIn PDF document text
    • http://paillasse.hu/userfiles/file/4312500039.pdfIn PDF document text
    • https://www.lightingsolutionsinc.net/wp-content/plugins/super-forms/uploads/php/files/cc7cc0814d4657fcfc55d17205604a79/rosidijojufixoxit.pdfIn PDF document text
    • https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/9e55dc0846ba473c2c148109c443f4aa/vixefaworuvabuf.pdfIn PDF document text
    • https://resonanceacteurs.nl/userfiles/file/77380182144.pdfIn PDF document text
    • http://morethancars.nl/uploads/edytor/file/dazimumekonaf.pdfIn PDF document text
    • 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_off0000ed6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED6C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001057e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1057E 16316 bytes
SHA-256: 602df352b69481a0b5e3bb69d8c7f369a63b735555484137cd03bea37e009cea
font_02_sfnt_off00012f48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F48 10620 bytes
SHA-256: 61eeed24e9ecb45a3631efb3084b4d389a772c4034c41027b70b46dac4f66154

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