Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fe2ae37b4da47c7…

MALICIOUS

PDF

59.5 KB Created: 2021-09-06 09:46:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 733a407a65bc1e661f6b596f83abbdab SHA-1: e8a2c9af42737fea0f4d967713def21b4e16db0c SHA-256: 0fe2ae37b4da47c793859b41fd5ea41cdf80e95e1dd671bdcf3260c5bbe7e8fd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a link farm, directing users to multiple external websites hosted on potentially compromised or disposable domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and numerous embedded URLs suggest it's designed to lure users to malicious sites, aligning with spearphishing attachment tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6276

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://machinex-machines.com/UserFiles/File/75807614012.pdf In PDF document text
    • http://hrudolf.com/userfiles/99495332072.pdfIn PDF document text
    • http://wrtour.com/FileData/ckfinder/files/20210731_72BE0C3BCADE8B00.pdfIn PDF document text
    • http://jyotiacademicpress.org/uploads/file/42067522097.pdfIn PDF document text
    • https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/d0ctfgf5svuq3diip7sf7vi426/fefeb.pdfIn PDF document text
    • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6ab1f9b559---19388030824.pdfIn PDF document text
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098dbfe2ed82---puranejelubube.pdfIn PDF document text
    • http://schokoladenbrunnen.de/idata/jodesugol.pdfIn PDF document text
    • http://ihdbd.org/upload/files/92791712031.pdfIn PDF document text
    • http://risme.vn/files/90098440199.pdfIn PDF document text
    • https://vnmmalta.com/userfiles/file/63860009139.pdfIn PDF document text
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/kh8ip4ro47m1eil5hbbkd5bgu1/fatuban.pdfIn PDF document text
    • http://xn--clinicaquirogavilario-vbc.com/wp-content/plugins/super-forms/uploads/php/files/35s4sujqa5t05irsbu4lm8smm3/filowotimelumate.pdfIn PDF document text
    • https://mytekas.com/UserFiles/file/vosiveluz.pdfIn PDF document text
    • http://ks4073.com/file_media/file_image/file/80091352837.pdfIn PDF document text
    • https://www.qbuildsoftware.com/wp-content/plugins/super-forms/uploads/php/files/1907584d40226a0471f3a539fbf44890/xupekigo.pdfIn PDF document text
    • http://anpharma.net/upload/files/21474571014.pdfIn PDF document text
    • https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/1fadea4594d70709239ca56225a0c9e4/futimisug.pdfIn PDF document text
    • http://prestinoequitacion.com/imagenes/upload/files/88878619460.pdfIn PDF document text
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16084331501c75---44907638917.pdfIn PDF document text
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/4b4803631339a4dfb13355c13573d74c/5061861677.pdfIn PDF document text
    • http://prinsart.ro/uploads/files/milodiradoj.pdfIn PDF document text
    • http://arslanemlak.com/E/file/bolimisivamomo.pdfIn PDF document text
    • http://cnmrobotics.com/files/files/zorupufuruw.pdfIn PDF document text
    • https://samowar.me/userfiles/files/moruvakikimo.pdfIn PDF document text
    • http://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/a178452970cd4f5d89c3f55e3470f4ef/jokelop.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=logic+gates+ic+numbers+pdfPDF 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_off0000ba7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA7E 16176 bytes
SHA-256: 78ca06bbf1a51b6596bbda708000cb735433136750fc99f8cda5d5cd232077b2

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