Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ae1202c8c75af82…

MALICIOUS

PDF

63.7 KB Created: 2021-04-30 22:51:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9439bef052c1563e9731d179758e1ac4 SHA-1: d478d03d0a73d33a6fb07516057003d0df0eb7a5 SHA-256: 8ae1202c8c75af821cb65edd145424a1e5fee7d74431b9befcc0be5f7a13aa03
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains multiple links pointing to compromised WordPress sites, suggesting it's part of a phishing or malware distribution campaign. The PDF structure and embedded links are consistent with exploiting vulnerabilities or tricking users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8394

Heuristics 4

  • 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.
  • 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 http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082a8d0e3f39---99796984549.pdf
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/kte8q6isprjg856su3sg3rcsp0/19691593507.pdf
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606fe9ec18542---tedejajasitali.pdf
    • https://sckstone.com/wp-content/plugins/super-forms/uploads/php/files/514b754a0019bebbd47115c8e0bfd174/87385038976.pdf
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/16072eb5fdbea9---61964007534.pdf
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/932dc52b0c6dd77ee0c44cf8f8ff5487/zopugutawabemilezu.pdf
    • http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/1607221dcc1ca7---tiforuwipuritale.pdf
    • https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/7ca5c7821f3249f14a7d6b5f1b55a088/1546531189.pdf
    • https://churchosonline.com/wp-content/plugins/super-forms/uploads/php/files/437f55655e20b12f9c60366e3693cea0/77649553496.pdf
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/79f4130b260c758175659a4a9a8e7574/96525600221.pdf
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/2p9nu1s8k7jnl32pv1j62i7mc7/tadibajedopigiwatimenuj.pdf
    • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd9837ef3a---figere.pdf
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e1f604958a---puruzedafegi.pdf
    • http://tavernadelsnoguers.com/wp-content/plugins/super-forms/uploads/php/files/341f5e4b4dc3c2da7b10d250a0fd071b/kegiveturewu.pdf
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607f104d0e55b---14337422001.pdf
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608470e1172cd---pejuwawererib.pdf
    • http://maidnheaven.com/wp-content/plugins/formcraft/file-upload/server/content/files/160797419d6f65---4506281928.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=good+morning+shayari+image++free
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eed3.bin
a09caa2cff8af4fbb04ff67d706dbe762a38c7791331977d36008cd85c4e6659		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEED3 5420 bytes

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