Malicious PDF — malware analysis report

Static analysis result for SHA-256 702b1ea68f6319c3…

MALICIOUS

PDF

90.3 KB Created: 2021-07-31 22:12:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: b46369a5558c42b49de30f63270c85e2 SHA-1: 47f8649fe3e4b900582154f0323998e3febbc81d SHA-256: 702b1ea68f6319c38e4bd8312d6902a916d354c225d2df810b8f0f388cb91574
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links, many of which point to compromised WordPress sites, suggesting a link farm designed to distribute malicious content or phishing lures. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were extracted, the structure and URL patterns are consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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 http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/f68e12b4b4fd2d777faef0b19dae9235/famuwagivisomixi.pdf In PDF document text
    • http://a1-automotivegroup.com/upload/files/7770932767.pdfIn PDF document text
    • https://eliteplacementagency.com/uploads/files/fevudibivezonotori.pdfIn PDF document text
    • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607fb556e1f3e---4432622650.pdfIn PDF document text
    • http://bakoca.hu/files/file/bekosojafubus.pdfIn PDF document text
    • http://dermaktif.com/imgup/file/3304218606.pdfIn PDF document text
    • http://bidwoodmachine.com/d/files/vaferelofizitagoladaj.pdfIn PDF document text
    • http://mindatpeace.us/uploads/files/jujukowevuzufowu.pdfIn PDF document text
    • https://vibangthuaphatlai.net/uploads/files/zugazadiperexakaliputew.pdfIn PDF document text
    • http://kemenyseprosiklos.hu/upload/file/70735619160.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/030824282727.pdfIn PDF document text
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/asphgi140k4eips777bsutdg99/jevafepidemosavovo.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/i5fo7aivq8qgm80lnnuh94qo26/34710419576.pdfIn PDF document text
    • http://eastwoodfamily.net/userimages/ruvefunim.pdfIn PDF document text
    • https://cincia.ro/ckfinder/userfiles/files/kuwezamojawelolelumu.pdfIn PDF document text
    • https://nceptionsolutions.com/wp-content/plugins/super-forms/uploads/php/files/c35b69cd0a41c8df3dd9dd6ccded6dd6/95929046173.pdfIn PDF document text
    • https://xn----9sbccjdbca7cyaieg1a3j.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/a9a73b3e09daba24128460531cf65bea/36862831036.pdfIn PDF document text
    • https://kawanmto.com/contents//files/26862687878.pdfIn PDF document text
    • https://stijsr.com/userfiles/file/10140401575.pdfIn PDF document text
    • http://net-mex.hu/ckfinder/userfiles/files/51253864862.pdfIn PDF document text
    • http://zafirkort.com/uploads/files/nitomamaviredoxof.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608b24c987104---51538664975.pdfIn PDF document text
    • http://sam-global.info/files/file/5653082441.pdfIn PDF document text
    • http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160828d75d6a12---87594053086.pdfIn PDF document text
    • http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/160fe39af59a4d---norutigirej.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=abecedario+letras+grandes+minusculas+para+imprimirPDF link annotation
    • 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_off0000f8e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E9 18248 bytes
SHA-256: 31aca5e350a0901b161cca94449ce25cb4fc5f8532b4d1ccbfe50dbf9881fbe6
font_01_sfnt_off00012792.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12792 11076 bytes
SHA-256: 05c2e6e56a4ccf4845ac8046bb980dd05f357ba915c3476c77b363046b792e9e
font_02_sfnt_off000140f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x140F9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1