Malicious PDF — malware analysis report

Static analysis result for SHA-256 32a47dd24ca812d8…

MALICIOUS

PDF

61.1 KB Created: 2021-04-30 22:53:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 4443f0757eaf8e9d4b723a72529c3a66 SHA-1: f94de7cc2428f76679af2df2b9602e3fc43d4ad9 SHA-256: 32a47dd24ca812d8cd2f28f2e24598765ba78af9e5ee6371bd0f9b2e7a476a3c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links pointing to compromised WordPress sites, indicating a link farm designed to redirect users. The presence of these links suggests an attempt to lure victims to malicious or phishing content, likely as part of a broader phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8151

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/5d03c918f5164b5c5825444a6998c63f/93819202532.pdf In PDF document text
    • https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/9d43a27e905626df3b748bc61265bb4d/vugitaroverixedokolof.pdfIn PDF document text
    • http://tavernadelsnoguers.com/wp-content/plugins/super-forms/uploads/php/files/3d30252febc23748c7050035a30e1dd1/24843111183.pdfIn PDF document text
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16083b61e9376e---pafopowot.pdfIn PDF document text
    • http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/flfoq72vgj1io0h95ugaaa6lhr/41424315350.pdfIn PDF document text
    • http://erbilsunhotel.com/wp-content/plugins/super-forms/uploads/php/files/bo7m29ju8p9igap6nhqqb9o5m4/5386495792.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/1607350135f098---jugelo.pdfIn PDF document text
    • http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/16081ddc134b96---24199813586.pdfIn PDF document text
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16075c6e8856fa---76871059001.pdfIn PDF document text
    • http://www.melloecastro.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608310dd03a0b---demetuboxosuburux.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/160848dff9771b---71551619805.pdfIn PDF document text
    • https://www.ideaklinik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1606fcf4659e6f---sakulefe.pdfIn PDF document text
    • https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/41bbcf1901ccdfb21dbc808d2200a7ad/93237599163.pdfIn PDF document text
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608147f5583c8---85804853504.pdfIn PDF document text
    • https://festival.bg/fckeditorfiles/file/lusune.pdfIn PDF document text
    • https://humble-brag.com/wp-content/plugins/super-forms/uploads/php/files/iji576m2c0uu6e21q48i09t7j7/kanedilurobufakibit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=graphing+quadratics+in+vertex+form+worksheet%2523+1PDF link annotation
    • http://lovewhereyoulv.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/da97939775dd79ccb31b4024311a37e5/69272621238.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d768.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD768 5860 bytes
SHA-256: 825720283122f8ab990308404d3ca4e29a89b9dfb394c6867958029db98b0e75

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