Malicious PDF — malware analysis report

Static analysis result for SHA-256 2789ef9c7dde89b6…

MALICIOUS

PDF

42.7 KB Created: 2021-07-04 03:25:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 1dca1c744290c1908210508511d17404 SHA-1: 4ccae6a364a512fc329b00aad9d88f68f8006e8a SHA-256: 2789ef9c7dde89b6470f44a205b6f6af889ff5983a44c864c5e5a70dfac54747
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF is identified as a phishing lure due to its image-only nature and embedded clickable link. The link directs to another PDF hosted on a compromised WordPress site, suggesting a multi-stage attack. The ClamAV detection and ML classifier further support its malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6964

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 42 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://hotelexpert.ro/uploads/files/dasokositetinana.pdf In PDF document text
    • http://bjjiffy.com/upload/10649007986.pdfIn PDF document text
    • https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/07ddotejgc4qvl3megigkavgm3/15882801622.pdfIn PDF document text
    • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b27e221cac1---rumin.pdfIn PDF document text
    • https://ljlconst.com/admin/images/file/89525747856.pdfIn PDF document text
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/16071aeca18666---sozajifiwixitosivigurone.pdfIn PDF document text
    • http://contentworks.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606f41dc10dde---wimibaxisuvejobefelun.pdfIn PDF document text
    • https://www.eoluk.com/wp-content/plugins/super-forms/uploads/php/files/8s54sfa0aqod9jar6c27798nur/36533604005.pdfIn PDF document text
    • https://cutandcolorparrucchieri.it/file/14721719041.pdfIn PDF document text
    • http://alhouti.com/userfiles/file/2094960233.pdfIn PDF document text
    • https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/512beb936164671ef41764c03f9fb8ec/64415306315.pdfIn PDF document text
    • http://www.festivalmarrakech.info/wp-content/plugins/formcraft/file-upload/server/content/files/160a87e09532a8---gakik.pdfIn PDF document text
    • https://k2salight.com/wp-content/plugins/super-forms/uploads/php/files/1d7cd671103b77af2094d27529632c35/8754000057.pdfIn PDF document text
    • https://invest.pl/userfiles/file/tudin.pdfIn PDF document text
    • http://italiangreyhound.pl/img1/userfiles/file/54956339029.pdfIn PDF document text
    • http://lawngo.net/fckfiles/mopupagobo.pdfIn PDF document text
    • https://condominiobrisasdelnorte.com/userfiles/file/roneguvodaworigi.pdfIn PDF document text
    • https://retake.dk/ckfinder/userfiles/files/78007002020.pdfIn PDF document text
    • https://weblative.com/wp-content/plugins/super-forms/uploads/php/files/era8c0ohnc2q0k762maarb584h/36543808071.pdfIn PDF document text
    • http://cngwalk.com/fckeditor/userfiles/image/89867268860.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1607f8caf78590---xenet.pdfIn PDF document text
    • https://www.letspassdriving.co.uk/wp-content/plugins/super-forms/uploads/php/files/rmj4lhrrkicnvuu5fl2idu58g6/bakepivefutakix.pdfIn PDF document text
    • https://fiambreszav.com/wp-content/plugins/super-forms/uploads/php/files/4c7d5a44c007ce54245cff86c92e5811/telotokuzubesalodofik.pdfIn PDF document text
    • http://a-kamen.com/userfiles/file/nalixepiwatitavowefekuj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=introduction+to+plane+geometry+pdfPDF link annotation

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