Malicious PDF — malware analysis report

Static analysis result for SHA-256 070fe04dd9d90d96…

MALICIOUS

PDF

87.6 KB Created: 2021-07-29 16:50:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: c7a4570cb159fd1a7867577c70a469fe SHA-1: ba6671c1863dbffa24eb24bed9e0e795208b1c78 SHA-256: 070fe04dd9d90d96f7f7341ea4239a234d4cb34f2bb9c1f30b6c8b6c9a05ac86
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 'Pdf.Phishing.Trojan'. The file contains numerous links pointing to compromised websites and disposable hosting, suggesting a phishing or malware distribution scheme. The presence of external URIs and link farms indicates an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://huntic.ru/uplcv?utm_term=nursing+care+plan+for+patient+with+hyperlipidemia PDF link annotation
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160779ee99be0d---25729788765.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16073f04664261---9127945120.pdfIn PDF document text
    • http://ekhoron21.mn/uploads/files/84144602088.pdfIn PDF document text
    • http://chhsmahs.com/clients/8/83/83f479e57a8bbaec88b4a04d821ef24e/File/10384168009.pdfIn PDF document text
    • https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f980093333---potaponan.pdfIn PDF document text
    • http://imagespa.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160aca2a45cf94---67934657938.pdfIn PDF document text
    • https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/160bada33b3c8b---xifesijavadeb.pdfIn PDF document text
    • http://rollfactorytogo.com/uploads/files/sefuzitumanorepanavevuwil.pdfIn PDF document text
    • http://abacusnancy.com/userfiles/file/44617481415.pdfIn PDF document text
    • http://xtra360.net/campannas/file/vojujuxixafepunifo.pdfIn PDF document text
    • http://eko-inwest.eu/upload/file/rewun.pdfIn PDF document text
    • http://www.firstpages.eu/app/webroot/files/userfiles/files/29173196815.pdfIn PDF document text
    • http://bortran.com/upload/image/file/20210623025853.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f1df8a4340---lozojokakeg.pdfIn PDF document text
    • https://mudraconsultancy.com/uploads/files/82592571434.pdfIn PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a280ac96ae6---fixaxogaxazure.pdfIn PDF document text
    • https://globalclassic.org/wp-content/plugins/super-forms/uploads/php/files/0pm7hrbo7frlhbt68qjv0rljse/jekukigewonowesixunete.pdfIn PDF document text
    • http://www.abcklima.hu//data/editorfile/9881734016.pdfIn PDF document text
    • https://iwnta.com/userfiles/file/36307955707.pdfIn PDF document text
    • https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/hbbofcserpjqu44k8i1ko4sbp3/22454122274.pdfIn PDF document text
    • https://dbjadow.pl/attachments/file/kofemukotaxo.pdfIn PDF document text
    • https://takeorders.online/wp-content/plugins/super-forms/uploads/php/files/vnq0lb19fkqrh1giu0kqgf937h/55878603750.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/h4qdj343nei9guthfga986p075/97310966423.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_off0000f0f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010908.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10908 17224 bytes
SHA-256: 34cb42b199c259f584e66c470306c5759fb12db4f2a2ae05939475993a65e579
font_02_sfnt_off0001363c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1363C 11344 bytes
SHA-256: f242c3c4a9fb36584512de493e34cb761262955af860377fda00e75bd2c6e3d1

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