Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5e6210bb335f7a4…

MALICIOUS

PDF

76.2 KB Created: 2021-09-04 06:53:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 6b84558db5a2c9440ff341eb949644e0 SHA-1: d0c206cb191f34c4585da0db261d302865bb60ea SHA-256: b5e6210bb335f7a45b42de16abba69b0a3b1ef5822050d08b1029e6467c84e19
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a link farm pointing to numerous compromised WordPress upload directories and other disposable hosting. This structure is indicative of a phishing or malware distribution campaign, likely intended to lure users to malicious sites. The ClamAV detection further supports its malicious classification.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4750

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://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/bf2hjgq6tlkn4r4rg9bs5unv94/gimeparixofifexim.pdf In PDF document text
    • http://bociany.sk/media/file/wezoxita.pdfIn PDF document text
    • http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/8t9n01cr7pi5cvqcia5l2lpq60/pevewilelejobam.pdfIn PDF document text
    • http://fewo-spreewald-schoetzigk.de/brandenburgtag/img/editor/file/zupejagodugufemaluxa.pdfIn PDF document text
    • http://odessahighschool1970.com/clients/7/70/70263b1be1b93b62200e198143f59f20/File/xodoputafegagozivitewatud.pdfIn PDF document text
    • https://fototipia.hu/files/files/1315798632.pdfIn PDF document text
    • http://hart-metale.pl/gimnazjum/userfiles/file/33782193442.pdfIn PDF document text
    • https://copab.tn/216mag.svn/uploads/files/32051415241.pdfIn PDF document text
    • http://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/1609ff7771df79---8248019252.pdfIn PDF document text
    • http://yuanjen.com/ckfinder/userfiles/files/9154574364.pdfIn PDF document text
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093b2cdb5d05---xanoporebolepanujanugigi.pdfIn PDF document text
    • http://extracam.es/app/webroot/arxius/file/gawegupubaxa.pdfIn PDF document text
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611cfea8243b9---xeriluva.pdfIn PDF document text
    • http://drivingschool-brno.eu/files/12456686389.pdfIn PDF document text
    • http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/160717b2c6988a---gajaruri.pdfIn PDF document text
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16089698c535e6---lusepafajuken.pdfIn PDF document text
    • http://mygiftltd.com/userfiles/file/wiwefanasijexer.pdfIn PDF document text
    • https://travelinnsuites.com/nbloom/fckuploads/file/resanureguritoxu.pdfIn PDF document text
    • http://szwygs.com/upload/tanamidivaw.pdfIn PDF document text
    • http://jarosi.hu/files/file/49274472170.pdfIn PDF document text
    • http://www.dilipprabhavalkar.com/images/file/zugojilifisegozawutat.pdfIn PDF document text
    • https://mvmdigital.gr/files/files/75405997911.pdfIn PDF document text
    • https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/f6cd454ab477a1f824d8092d055d1416/tolobok.pdfIn PDF document text
    • https://rtvpuls.com/ckfinder/userfiles/files/maruzugewi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=transport+worksheet+year+2PDF 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_off0000e518.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE518 17452 bytes
SHA-256: 149d7eb63399c65eb332c00d05a8c4b81f06161f6d03b05a21dd7601e8f159c7
font_01_sfnt_off0001120d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1120D 10588 bytes
SHA-256: e7f49f9ae7a4d7458cab13410ec2b9ab023f17ea68026a1bb1d414606150b7fc

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