Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe1e6fb46effdbea…

MALICIOUS

PDF

69.5 KB Created: 2021-09-20 00:10:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: c8e55047ae61e92251102d09762d3a56 SHA-1: f5037ce927a8caf726a5d508e361b6d35c0191dd SHA-256: fe1e6fb46effdbea03b3c1bfc05c1b8129197837e61246472a3be66a441df71d
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised or disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution through these links. The file's structure and URL distribution align with techniques used to obscure malicious destinations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9156

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.perchegouet.com/ckfinder/userfiles/files/molevusenupivan.pdf In PDF document text
    • https://bodymason.com/user_uploads/files/kixikazali.pdfIn PDF document text
    • http://jongauger.com/ckfinder/userfiles/files/74797861383.pdfIn PDF document text
    • http://liily.jp/upload/file/20210903222404.pdfIn PDF document text
    • https://sassanoproperties.com/FCKeditor/file/64506410214.pdfIn PDF document text
    • https://tebra.si/userfiles/file/vofalupogadupobagukika.pdfIn PDF document text
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613873bbd0a07---70567270493.pdfIn PDF document text
    • http://form4concrete.ru/pics/cont/file/62986605634.pdfIn PDF document text
    • http://candleelectricals.com/uploaded_files/userfiles/files/zabigowuja.pdfIn PDF document text
    • https://hoovermaids.com/wp-content/plugins/super-forms/uploads/php/files/45147573be4dcc8e830eef99d6fa66da/pilifegimobajuxixini.pdfIn PDF document text
    • https://bokaichenyu.com/upload/files/1619843073.pdfIn PDF document text
    • http://biomehl.com/images/content/files/nisofot.pdfIn PDF document text
    • https://purevdavaa.mn/uploads/ckfinder/files/rutomuvedabigineladag.pdfIn PDF document text
    • http://westernmaki.com/uploads/files/gelilumusa.pdfIn PDF document text
    • http://haohanlegend.com/Uploadfiles/files/zufobutijez.pdfIn PDF document text
    • https://arrayamed.com/userfiles/file/vurorililepujadewirigi.pdfIn PDF document text
    • http://chekeeh.ir/basefile/chekeehir/files/kofuvedajamudoxesipawuve.pdfIn PDF document text
    • http://depcip.com/app/views/panel/ckfinder/userfiles/files/bodanonodumizijigaxoga.pdfIn PDF document text
    • https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/75c97fde5f9cc9dde4528bd625cfd283/dumividaragopogasamenino.pdfIn PDF document text
    • http://insfilings.com/skyzone_classic/upload/files/sezewozosaxazu.pdfIn PDF document text
    • https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/8ca1bd492e2dcdba9145d9f45b498c8c/76646124717.pdfIn PDF document text
    • https://taucaotoccatba.vn/images/news/files/97507325049.pdfIn PDF document text
    • http://rheinmotel.com/userfiles/file/96460997303.pdfIn PDF document text
    • http://dongphat.net/upload/files/fufun.pdfIn PDF document text
    • http://www.tenniscanberra.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613037c7ad3eb---67557301248.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=games+online+for+3+playersPDF 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_off0000eacd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEACD 10748 bytes
SHA-256: e1b27d7e559e4b6b75a1913c590c29173e6aedda9963337b0bef101422014fa8

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