Malicious PDF — malware analysis report

Static analysis result for SHA-256 abd271a25c4f0af6…

MALICIOUS

PDF

63.7 KB Created: 2021-09-02 16:29:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-03
MD5: 9531414180693da1e67a415d294e05e8 SHA-1: 9b19ac215a0a7b7408024ba55ca52d01df2e9ccc SHA-256: abd271a25c4f0af6f6369825e25616dd0c5dce3847d605d6e8dbdf7d9bd7e89f
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains a link farm pointing to multiple compromised WordPress upload directories, suggesting an attempt to distribute further malware. The presence of numerous unknown URLs indicates a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7155

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 http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2475aae57b---zatumafumukolonivi.pdf In PDF document text
    • http://the100voicesofgospel.de/fichiers/newsletter/file/lupufidefusexilewazijo.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078d8bbb6654---61786346779.pdfIn PDF document text
    • http://kfnmsz.com/upfolder/e/files/20210708065815.pdfIn PDF document text
    • http://teresachild.com/upload/files/96427516792.pdfIn PDF document text
    • http://myphamlulanjina.com/upload/files/rizodixuwof.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cbec51ac383---sugetil.pdfIn PDF document text
    • https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/9bf6aeef1ed5b580b1be51b7bdf61946/binasodivewojazexotevute.pdfIn PDF document text
    • https://gearforfree.com/wp-content/plugins/super-forms/uploads/php/files/ed374drq5mufra4q7ao8s27o06/wigetalogupemozasidukixij.pdfIn PDF document text
    • https://starfoil-mail.nl/uploads/wysiwyg/ludoxopogewafeg.pdfIn PDF document text
    • https://mma-montessori.com/admin/ckfinder/userfiles/files/60753740436.pdfIn PDF document text
    • http://sz-nuoyi.com/Upload/file/2021081122213561864.pdfIn PDF document text
    • http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160901377a14ab---83508467299.pdfIn PDF document text
    • https://nestsearch.in/admin/uploads/file/80349399712.pdfIn PDF document text
    • http://viettelhaiphong.me/data/dulieu/files/29697474047.pdfIn PDF document text
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfdaf897984---nosawexopigexedekodazazap.pdfIn PDF document text
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608f90d1ae367---wonenebasovilugopofime.pdfIn PDF document text
    • http://autoscuolauniversale.it/userfiles/files/gikuvesizoriritemu.pdfIn PDF document text
    • http://jinistudy.com/_UploadFile/Images/file/31232625890.pdfIn PDF document text
    • http://bike-aholic.com/UserFiles/file/gijajuditilegido.pdfIn PDF document text
    • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160c02ccb68b43---bozijagagajuzer.pdfIn PDF document text
    • https://eventaipei.com/upload/files/boduko.pdfIn PDF document text
    • http://hoondb.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083b13f5af59---57582704122.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=lisan+ul+quran+pdf+by+aamir+sohailPDF 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_off0000da09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA09 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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