Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d0699853e5443da…

MALICIOUS

PDF

80.4 KB Created: 2021-07-06 04:00:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 07ba9f6b04196716c1ec7ae556496457 SHA-1: 72e320f1fefc23da3e30ad257afcabf64ce88893 SHA-256: 5d0699853e5443dacb2526ec9057b01ae6bdafee038ab79837f0af8a45f42c14
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to compromised WordPress upload directories or other disposable hosting. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests malicious intent, likely to phish credentials or deliver a secondary payload. Although no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4208

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://www.pal-kont.hu/wp-content/plugins/super-forms/uploads/php/files/7df914506b4d777ed40918eed171dc32/bomivawikorasebo.pdf In PDF document text
    • https://flycam.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16099c5414e0d1---sulebagijure.pdfIn PDF document text
    • https://alshamiltrading.com/alshamilfiles/file/sevapipizigarotitif.pdfIn PDF document text
    • http://jointrilogy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a326292aa29---40565815547.pdfIn PDF document text
    • https://uppersanduskyrotary.com/cms/files/File/68979160306.pdfIn PDF document text
    • http://naturallabs.fr/userfiles/file/41234268977.pdfIn PDF document text
    • http://anthonyvienna.com/sites/default/files/file/dojunagitorokoni.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/madetokamop.pdfIn PDF document text
    • https://gradeagroup.com/wp-content/plugins/super-forms/uploads/php/files/g4gvcqpb71be38cropafle7jrb/39805689757.pdfIn PDF document text
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/7475b538b80c9937561e1e190d8a59eb/gexivufegilezunitumibu.pdfIn PDF document text
    • http://staples1981.com/clients/b/ba/ba027a536d51c1d997ee76cae6dc9017/File/vumerarozumarexifemekabe.pdfIn PDF document text
    • http://teraval.cz/res/file/datiner.pdfIn PDF document text
    • https://joepromenshealth.com/wp-content/plugins/super-forms/uploads/php/files/8e3b6a6eda4f37ba2f33cca7ed567a0d/fatidezufe.pdfIn PDF document text
    • http://primaria-ciocirlia.ro/media/file/nugexanem.pdfIn PDF document text
    • https://maloneslandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2315ca39c3---sojoremonemisiborunome.pdfIn PDF document text
    • https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/58cd1174e72a7c8a19e64e346a15bc5a/8422341462.pdfIn PDF document text
    • http://lab4050.com/upload/editor/file/32343986371.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160e2ce91e3dea---jatazi.pdfIn PDF document text
    • http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/16081cdf144f03---98811442350.pdfIn PDF document text
    • http://www.justgiveahand.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609d3da140b3c---52451596753.pdfIn PDF document text
    • http://notarbrazda.cz/userfiles/file/pixomutijubixiteji.pdfIn PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608b0f90cc96e---27134733171.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d5e489141c2---47286289798.pdfIn PDF document text
    • http://www.sevenchurchestour.net/seven/wp-content/plugins/formcraft/file-upload/server/content/files/1608c6f09059c2---87075878998.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=political+science+today+whitman+cobb+free+pdfPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eeb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB4 18684 bytes
SHA-256: 96422d6464790045fcf410c280733ee8a3da6a8938c3b9c8163017fdf3ac9526
font_01_sfnt_off00011f9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F9D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1