Malicious PDF — malware analysis report

Static analysis result for SHA-256 f49cfa6fe1e0996c…

MALICIOUS

PDF

63.7 KB Created: 2021-07-20 23:18:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: ff0ad7795d986c27db7aa2b99f0053f7 SHA-1: 6f5e9af7e49fdbb114478f4745660d07b2587a65 SHA-256: f49cfa6fe1e0996c6e8b086801bc18368ca99d2d3378deb2ce632a75fcfc255b
154 Risk Score

Malware Insights

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

The sample was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. Heuristics identified it as a link farm pointing to compromised CMS uploads and disposable hosting, suggesting it's used to distribute further malicious content. The embedded URLs likely serve as lures for phishing or malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6736

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://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/1606ce6aaa07ca---gakowuw.pdf In PDF document text
    • http://ecompletecontact.com/ckfinder/userfiles/files/19209343496.pdfIn PDF document text
    • http://tort-art.ru/userfiles/file/xiparivig.pdfIn PDF document text
    • https://samiznojmo.cz/wp-content/plugins/super-forms/uploads/php/files/24ea615ea1f0a5ec2d5972078a69c400/sezerolas.pdfIn PDF document text
    • https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/p36cmu2hngo066aprii62eklao/42156193815.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608489483fe5d---rebemalipojigufulo.pdfIn PDF document text
    • http://pmteventures.com/clients/5/57/576e8e71b788aac95a268099fab76a3d/File/lefusogejevitiwil.pdfIn PDF document text
    • http://ecologie-energie.com/userfiles/file/44869809203.pdfIn PDF document text
    • http://talani.nl/userfiles/image/file/bepom.pdfIn PDF document text
    • https://nevisnews.com/userfiles/maxelonu.pdfIn PDF document text
    • https://centar-znr-zop.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160b31070d3cd0---julogitinozipi.pdfIn PDF document text
    • https://pointsourcegroup.com/wp-content/plugins/super-forms/uploads/php/files/2572bd409e5230a32a7c52352c6655e1/nufaxod.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607ac30199bfc---4744552316.pdfIn PDF document text
    • https://bladmedyczny24.pl/wp-content/plugins/super-forms/uploads/php/files/78de5b389c2370a88ac8979bdc7677fb/valixegiz.pdfIn PDF document text
    • http://osheamaloneynylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/kezutisenibozu.pdfIn PDF document text
    • http://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9827aa0873---pekesexomakopemir.pdfIn PDF document text
    • https://travelworld.ro/userfiles/file/35187733467.pdfIn PDF document text
    • https://residenciasanamaro.es/userfiles/files/zijajibituwupodasoze.pdfIn PDF document text
    • https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/0e304ea24d95c1733f953ff4c0c139cd/wefapujefexebijelajabub.pdfIn PDF document text
    • http://broadviewlibrary.org/uploaded_bvlib/file/nemes.pdfIn PDF document text
    • https://ivfnna.gr/wp-content/plugins/super-forms/uploads/php/files/aed65d07b5f9416a2d7bfc3be0e2b1da/jokavegidis.pdfIn PDF document text
    • http://www.socalgreatwhite.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086f9be8b66c---29950952639.pdfIn PDF document text
    • https://actioncoach.com.my/wp-content/plugins/formcraft/file-upload/server/content/files/160ab699ad0a80---78272832520.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=the+little+mermaid+colouringPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d36f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD36F 17508 bytes
SHA-256: bcdea89e4ce934317b8e09ebc1f4ecb0e3c756136d49ae6e8b2ccd905a269bf4

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