Malicious PDF — malware analysis report

Static analysis result for SHA-256 75d0db90c79330e5…

MALICIOUS

PDF

58.4 KB Created: 2021-10-06 04:43:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: ea7a447f47840998a9b3ab3af9b6156d SHA-1: b6000aa22b42f75915c5c1d9b71618ca1cff1b95 SHA-256: 75d0db90c79330e544f9bce9c35ef7171e38fc997c166542a2f966b894526b28
124 Risk Score

Malware Insights

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

The file is identified as a PDF containing a link farm, with multiple URLs pointing to other PDF documents hosted on various domains. The ClamAV detection 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0' strongly suggests malicious intent, likely phishing or malware distribution. The presence of compromised CMS upload links further supports this, indicating the document is part of a malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4489

Heuristics 5

  • 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
  • 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://rtvpuls.com/ckfinder/userfiles/files/nukekabinogu.pdf In PDF document text
    • http://luatsugiadinhviet.com/upload/ck/files/46272046930.pdfIn PDF document text
    • http://lesmashclub.com/imgUpload/files/guviwuwutew.pdfIn PDF document text
    • http://jiin-torng.com/uploadfiles/20211001194305.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/161460adfacdf2---danaxavanasogajesev.pdfIn PDF document text
    • http://greddy.com/admin/common/ckfinder/userfiles/File/telilazadofuwe.pdfIn PDF document text
    • https://hediyelikhanem.com/calisma2/files/uploads/21063221622.pdfIn PDF document text
    • http://evrokomplekt.ru/userfiles/file/busakelirarogozitub.pdfIn PDF document text
    • http://kingsshopping.abwingsmd.com/uploads/files/45062756627.pdfIn PDF document text
    • https://www.d-table.com/wp-content/plugins/super-forms/uploads/php/files/91a75e2a6bb1311d1d68cf4fc8369006/nefodosigigobe.pdfIn PDF document text
    • https://gangnampools.com/contents/files/sofevopodexiwefelaxofu.pdfIn PDF document text
    • https://premiumvipbusiness.com/wp-content/plugins/super-forms/uploads/php/files/c3abb9936edc313699994f1347ae479c/45289436870.pdfIn PDF document text
    • https://sunarchegypt.com/userfiles/file/22877736234.pdfIn PDF document text
    • http://chekeeh.ir/basefile/chekeehir/files/67716180981.pdfIn PDF document text
    • http://csc0851.com/userfiles/file/20210927154815_ca0ep4.pdfIn PDF document text
    • https://storage-in-motion.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615170eb98c94---44841202990.pdfIn PDF document text
    • https://yingzhaoliuart.com/upload/file/3649497483.pdfIn PDF document text
    • http://thechitay.com/uploads/userfiles/file/13484352330.pdfIn PDF document text
    • http://yacpa.org/yacpafiles/file/21226442873.pdfIn PDF document text
    • http://autoset66.ru/admin/ckfinder/userfiles/files/nixitaxisovusuz.pdfIn PDF document text
    • http://weiddy.com/uploads/files/202110032026463166.pdfIn PDF document text
    • http://abwrva.com/uploads/files/54685827584.pdfIn PDF document text
    • http://faisaltowel.com/survey/userfiles/files/bolajafafenufekorazukowef.pdfIn PDF document text
    • https://nedimgame.com/calisma2/files/uploads/zodipagojolozemope.pdfIn PDF document text
    • http://barcelonahotel.vn/UpLoadFile/file/toxuxiwaxidimosesuwimafok.pdfIn PDF document text
    • http://daming-school.com/userfiles/file/55952632432.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=hexokinase+is+what+type+of+enzymePDF link annotation

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