Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3db300462731cae…

MALICIOUS

PDF

101.2 KB Created: 2021-08-08 06:59:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: df73d97ff6f41a3168489ea8b8532197 SHA-1: e284ee97871dc8e66a7a0bfdef3ef047d39da566 SHA-256: d3db300462731caecfd4543454209599c4548988a04d66e6e9b12d6457e892da
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript, which is a common technique for executing malicious code. The file also includes numerous links to compromised WordPress sites, suggesting an attempt to host or distribute further malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicates a phishing or trojan delivery intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5543

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071d15586962---sujad.pdf In PDF document text
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/a99541380d8364fbdd533e2bf963ce83/61776249644.pdfIn PDF document text
    • http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16078362eb3ed9---66009630199.pdfIn PDF document text
    • http://ztkammer.at/uploads/file/48291503407.pdfIn PDF document text
    • http://amtusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb1bd02f470---96061939214.pdfIn PDF document text
    • http://chonburi33.com/userfiles/file/64953889932.pdfIn PDF document text
    • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160947cb6c2a2c---7765111885.pdfIn PDF document text
    • http://indemo.pl/Image/files/kepiregalowe.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/gm3eroai6cm533frvc5fpj7i76/diridodovalagupiduf.pdfIn PDF document text
    • https://xn--80aggmy8c6c.net/UserFiles/File/72126217995.pdfIn PDF document text
    • https://equator-maritime.com/userfiles/file/56829748548.pdfIn PDF document text
    • https://gamletaarnhuset.no/wp-content/plugins/formcraft/file-upload/server/content/files/160f7a96b482ef---gefatugememetatabidedigu.pdfIn PDF document text
    • http://titadoorbinhduong.com/upload/files/zibaweropokebawiget.pdfIn PDF document text
    • http://vandientuchinhhang.com/upload/files/4954152611.pdfIn PDF document text
    • http://mega-stainlesssteel.com/uploads/image/files/sevugezekezino.pdfIn PDF document text
    • http://bestofbeer.ru/ckfinder/userfiles/files/83680605110.pdfIn PDF document text
    • http://bobiniauto.com/userfiles/file/juziwakanafazikobuxu.pdfIn PDF document text
    • http://gumberryoleschool.com/clients/33891/File/55317802809.pdfIn PDF document text
    • http://alimentosldm.com/userfiles/file/padudigojepitovobiwelizil.pdfIn PDF document text
    • https://signaturetowerpune.com/wp-content/plugins/super-forms/uploads/php/files/hhs02firienih4b924u92k51q3/pajigajiwamijapufet.pdfIn PDF document text
    • http://smflow.in/admin/uploads/file/98184252459.pdfIn PDF document text
    • http://tea-ra.com/user_data/upload/save_image/files/51468157671.pdfIn PDF document text
    • http://dharmapremipariwar.org/userfiles/file/18283458821.pdfIn PDF document text
    • http://www.msjcongregation.org/www/js/ckfinder/userfiles/files/loruwegeti.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=bakugan+fan+hub+apkPDF 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_off00014ca4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14CA4 19188 bytes
SHA-256: 2cc13e77a944224ffe0a688d379180ffe6429c66a0617dd3e56b85c680898c34
font_01_sfnt_off00017efb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17EFB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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