Malicious PDF — malware analysis report

Static analysis result for SHA-256 df6fcd9c118fb210…

MALICIOUS

PDF

65.2 KB Created: 2021-06-05 16:15:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 9307216b8e37802effe6df89b99530ee SHA-1: 2d4c7899cbfca9ff791d94bd5d5baa56ba6c02b4 SHA-256: df6fcd9c118fb2108006df25651e941e92b95f4d51b251330704ff4607fe1466
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to compromised WordPress sites, suggesting a link farm designed to host malicious content or phishing pages. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are consistent with a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9059

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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=warhammer+40k+rules+9th+edition PDF link annotation
    • http://autoshiftbid.com/fckeditor/userfiles/file/34914559322.pdfIn PDF document text
    • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607443dc1f1b2---piseku.pdfIn PDF document text
    • https://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/3138dacbaf575feacaa281656fe53594/69266252257.pdfIn PDF document text
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b5ee2c30612---levizenudazemux.pdfIn PDF document text
    • https://www.northernillumination.com/wp-content/plugins/super-forms/uploads/php/files/3d540b1fa7087908c5553b3b5944eac0/52657851266.pdfIn PDF document text
    • https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160aad78c17758---sizadatonovivonos.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/64117433501.pdfIn PDF document text
    • https://wills.sg/wp-content/plugins/super-forms/uploads/php/files/f60817e6d2974a3628ce18108a98d024/20353020737.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160752b4480e1f---77455012179.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/l71adg9sikb9ab89r2bmp26ccq/30646689802.pdfIn PDF document text
    • http://brmhn.com/userfiles/file/20210523080215_s344uy.pdfIn PDF document text
    • http://erbilsunhotel.com/wp-content/plugins/super-forms/uploads/php/files/3tkgkr2ob2qi2e20n22j0u95i7/61341856057.pdfIn PDF document text
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/bq30m10s2jhhv6tt61mkl6pqgm/75209434694.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/qcdss85cuflaqeqlp0vcdi3du7/xawomoxidoxinuzetebedu.pdfIn PDF document text
    • http://alibabashipping.com/userfiles/file/25190051507.pdfIn PDF document text
    • http://maytinhtuyenquang.com/home/maytinhtuy/domains/maytinhtuyenquang.com/public_html/images/file/bemejipipopijo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5E9 5528 bytes
SHA-256: 47d6e45696eb1544bd54e357f24f973e1708c03ebef9f960ae4cd84c2528cff4
font_01_sfnt_off0000e895.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE895 10224 bytes
SHA-256: 05f63be77e988e2fd1e3d5cda7c90e92e680bfbc9c3e3d324c40d21ea1a510de

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