Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b2cc5c325c0276d…

MALICIOUS

PDF

86.9 KB Created: 2021-06-26 00:29:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 7884919950ab3db77636326b4c6f4040 SHA-1: d1ccdac97b1fbe364f2b4a333def21fe6b5f20e3 SHA-256: 6b2cc5c325c0276dd14ae647f66f02138f0338b80f803ae1c4cec2c6dd7f51e2
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link farm pointing to compromised WordPress upload storage, suggesting an attempt to distribute malicious files. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were directly extracted, the presence of embedded URLs and the nature of the heuristics point towards a phishing or downloader attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/6899c324d7bd13d75f9c5fbd34c90755/vimobojo.pdf
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160803328ac366---54041314936.pdf
    • http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ae5bf47236---5677680373.pdf
    • https://mt-creativestudio.com/ckfinder/userfiles/files/pewutamisawixetevobat.pdf
    • http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a985f2d73f3---27459242300.pdf
    • http://amirafouad.com/uploaded_files/file/buluredasug.pdf
    • http://lyzebrno.cz/userfiles/file/dofokasizasisukepudujava.pdf
    • http://interstyle.org/content/xuploadimages/file/vofoxukejowapatimo.pdf
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/160b8bf11a5143---fovuvanekeroborebak.pdf
    • https://pezenasenchantee.fr/userfiles/file/godegigob.pdf
    • https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089f4c1bed0b---66098841783.pdf
    • http://maekalocal.com/Maeka/UserFiles/File/jakikilejubanevojoboj.pdf
    • https://couvreur-hautdoubs.fr/internet_new/images_et_fichiers//file/97808835718.pdf
    • https://mk-sito.it/uploads/file/35296686310.pdf
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/0qgqh804oej34ig0jhdki3n4p7/24305619181.pdf
    • http://akcjonariusz.com/UserFiles/file/rozagoraz.pdf
    • https://www.charityweiss.de/wp-content/plugins/formcraft/file-upload/server/content/files/16090492059b0c---98141321195.pdf
    • https://cal.lighting/wp-content/plugins/super-forms/uploads/php/files/46f4d0d4137fb9af50d811e5d867a7d1/4467870183.pdf
    • https://arerp.kr/data/file///9003182682.pdf
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3d8aee8265---55201306363.pdf
    • https://avenue102.com/uploads/file/74653106402.pdf
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/3a3d7a0fef027bb991050fc04b4f91b3/11089039685.pdf
    • https://smilepath.com.au/wp-content/plugins/super-forms/uploads/php/files/8219e14f915100bed84c7178612f2cdd/jisiduwituwigopizerofemu.pdf
    • http://lushexperiences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4ece8c8bcf---nadakiledapo.pdf
    • http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16086e52600bc0---41970220719.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=watch+dogs+2+apk+obb+for+android
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eda2.bin
8a04fa74546c7bae6bf465df6a7bf258aeada5bcb86e24b0f924a948b2ef963f
pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA2 18416 bytes
font_01_sfnt_off00011cbc.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11CBC 16792 bytes
font_02_sfnt_off000134d3.bin
f473da2cc21e4caee3fc51c11edac378efc049cd82c94484ea1572eed78f89ef
pdf-font-stream PDF embedded font (sfnt) at offset 0x134D3 11064 bytes