Malicious PDF — malware analysis report

Static analysis result for SHA-256 e94c01d4d56b4cbc…

MALICIOUS

PDF

40.7 KB Created: 2021-09-20 08:01:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-03
MD5: bbca395fd442589ec152344c2005f63a SHA-1: aecba8f643d1c859bb6c6fd57d6d8785659e2805 SHA-256: e94c01d4d56b4cbc277300353d582b08d9a94cdd0515b122ac2d3fe31c81b307
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file is identified as a phishing lure due to its image-heavy nature and embedded clickable links. Heuristics indicate it's designed to resemble a screenshot, prompting user interaction. The numerous external URLs suggest a link farm aimed at directing users to potentially malicious content or phishing sites. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious intent, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8574

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 40 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://oniceh.ru/uplcv?utm_term=photo+collage+maker+for+windows+10+free+download PDF link annotation
    • https://bimore.vn/webroot/img/files/rifonu.pdfIn PDF document text
    • http://buyyoutubecomments.com/ci/userfiles/files/24148923374.pdfIn PDF document text
    • https://allianztc.ro/files/file/lasurobipuxazurek.pdfIn PDF document text
    • http://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/xolusudifotatonanurak.pdfIn PDF document text
    • http://remaining-mc.de/userfiles/file/rexumige.pdfIn PDF document text
    • http://dtyxbpzx.com/filespath/files/20210920055239.pdfIn PDF document text
    • http://worldnaturalfood.com/image/upload/File/42858084356.pdfIn PDF document text
    • http://euro-ex.net/images/blog/file/wurodufuluw.pdfIn PDF document text
    • https://sarenpinler.com/calisma2/files/uploads/tekodape.pdfIn PDF document text
    • https://thefertilizerproductionline.com/d/files/vezavadukidevosanesufoj.pdfIn PDF document text
    • https://ketdoanbus.com/webroot/img/files/14089961140.pdfIn PDF document text
    • http://jn-zhsc.com/upload/sawotifupuganit.pdfIn PDF document text
    • http://trainternational.in/wp-content/plugins/formcraft/file-upload/server/content/files/1613170ebc5781---ditopoxuboral.pdfIn PDF document text
    • https://transmar.biz/ckfinder/userfiles/files/dimuvazu.pdfIn PDF document text
    • http://fmdscu.net/userfiles/file/81778310755.pdfIn PDF document text
    • http://zenobiacultura.it/userfiles/file///9063180817.pdfIn PDF document text
    • https://vinatech.com/userfiles/file/78068756274.pdfIn PDF document text
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d61e9a7e4b---66572714273.pdfIn PDF document text
    • http://djk-winkel.de/images/uploads/file/sidijumusigebipakepesep.pdfIn PDF document text
    • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132fd27a0546---wutavetibikowew.pdfIn PDF document text
    • http://jkbprivateiti.com/userfiles/file/xabebavubekawabe.pdfIn PDF document text
    • http://khocabien.com/uploads/files/nejig.pdfIn PDF document text
    • http://hyunshin.net/userfiles/file/25548869625.pdfIn PDF document text
    • http://adas-muko.pl/photo/file/78666630222.pdfIn PDF document text

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