Malicious PDF — malware analysis report

Static analysis result for SHA-256 f80e43d17f2e284e…

MALICIOUS

PDF

89.5 KB Created: 2021-08-02 02:21:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 99fa48fbae7a827f2eed3e802d45bc75 SHA-1: 2f71f898c9d9b107006f25bb4a6449bb91a0b3aa SHA-256: f80e43d17f2e284e48f22bbe30480bc96e8da198f904559c483a4e2fe7e4fc05
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains numerous links, many of which point to websites hosted on compromised CMS platforms, indicating a potential phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded links are designed to lure users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 6

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://badrivishal.com/media/97544415624.pdf In PDF document text
    • http://bezpieczna-strefa.pl/wp-content/plugins/super-forms/uploads/php/files/e16491443b3cf100ca0aeb2b01f35c73/48788337799.pdfIn PDF document text
    • https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/9c641ff23c7a3df3db4c792345217c82/dozorasuvepar.pdfIn PDF document text
    • http://chnli.tw/CKEdit/upload/files/98019431577.pdfIn PDF document text
    • http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a72face7a9c---11979002666.pdfIn PDF document text
    • https://evergreencans.com/userfiles/file/bojaxuvavulurifulagekan.pdfIn PDF document text
    • http://gearonlaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/77945493212.pdfIn PDF document text
    • http://carsonpokebar.com/uploads/files/dujagufipiwenuwujilegaz.pdfIn PDF document text
    • https://alrukn.co/userfiles/files/xemakobisivalo.pdfIn PDF document text
    • http://posekatzahradu.cz/files/file/mides.pdfIn PDF document text
    • http://movitecnic.com/ressource/site-image/files/mepuxinetotosomafigeg.pdfIn PDF document text
    • http://cy2hand.com/userfiles/botipibotojonofefikuna.pdfIn PDF document text
    • https://microfocus-realize2020mea.com/wp-content/plugins/super-forms/uploads/php/files/f71b455c9bb2d1c5d79a356fe45f50e3/64518916693.pdfIn PDF document text
    • https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/ecf64396524d1f1a55c71ab887d3c04b/11818049337.pdfIn PDF document text
    • https://nasroglobal.com/userfiles/file/53978899552.pdfIn PDF document text
    • http://atenngo.com/admin/sites/site/documents/noserorudego.pdfIn PDF document text
    • https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/994348650fc1900bd71c8de726c8bb58/23975743136.pdfIn PDF document text
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/06a603e1079826495383e2ef93af8895/botupixarizak.pdfIn PDF document text
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160a341d96d7d3---38190075326.pdfIn PDF document text
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/161057e7f8bfef---kasaforexijotikaxiwek.pdfIn PDF document text
    • http://ortetel.de/kunden/schurig/ckfinder/userfiles/files/mujovajimade.pdfIn PDF document text
    • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/e87f239975227f7ec3a900c826531d00/29438597318.pdfIn PDF document text
    • https://rijst.nu/userfiles/file/98137749713.pdfIn PDF document text
    • https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e52a57a2550---safakagaxepibabaxoneniliw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=plan+d%27action+commercial+hotel+pptPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E6 10644 bytes
SHA-256: 5995bc06eb055401ce5dfdb11552aa17996d69032a72915297bd37bd337b0446
font_01_sfnt_off0001110c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1110C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001291e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1291E 18848 bytes
SHA-256: 4b35a2454165e6593b665eb69c7907dc1f8ab4079cf50187d819784b1d2f6a82

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