Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5bf466fe1cc3230…

MALICIOUS

PDF

79.8 KB Created: 2021-07-02 12:01:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: e77ba0141d210ca3b79bca4fe3262b52 SHA-1: 922589dc1dc9402a1c060de3bbfeccb786b2e1a6 SHA-256: f5bf466fe1cc323061578ec1b55769bd968a15b03df10e441a1eb78cdbc45d01
124 Risk Score

Malware Insights

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

The PDF document contains a link farm, directing users to numerous external websites hosted on potentially compromised or disposable domains. ClamAV detected this file as 'Pdf.Phishing.Trojan-d2568dad23a94d95', indicating a malicious intent to lure users to malicious sites. The presence of multiple links on compromised CMS upload storage and disposable hosting further supports its role as a distribution mechanism for phishing or malware.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2676

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 http://traiteur-ribot.fr/userfiles/file/47178488654.pdf In PDF document text
    • https://golf-tout-terrain.com/publish/page/file/85733144511.pdfIn PDF document text
    • https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/pticmpnpl451j52qtpa01l1iq8/wodoxovopodudekupaxawi.pdfIn PDF document text
    • https://lee-trading.tw/archive/upload/files/49093683557.pdfIn PDF document text
    • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/8d51elgeiko72ul1fbuj903r5e/wobepejemif.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/160710f115b8b9---23857056856.pdfIn PDF document text
    • https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/160840e85a226b---95925143771.pdfIn PDF document text
    • http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608781d63e71e---94921566923.pdfIn PDF document text
    • https://aronabritcan.com/userfiles/file/90644604652.pdfIn PDF document text
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16094604805f91---bifawifisapawepozodume.pdfIn PDF document text
    • http://princeworldwide.com/multimedia/userfiles/file/33666073045.pdfIn PDF document text
    • http://chukgoobok.com/files/fckeditor/file/607386107.pdfIn PDF document text
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160810945601e1---geradevafudirezifomupodon.pdfIn PDF document text
    • https://pensiuneavlasin.ro/wp-content/plugins/super-forms/uploads/php/files/15osjin1acrscbui15i8k8gmqp/237228718.pdfIn PDF document text
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160aab3843fe17---88805981583.pdfIn PDF document text
    • http://blog.crowdly.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083c4e0e096a---fezoxenizofotolax.pdfIn PDF document text
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607090c625dbd---71769636667.pdfIn PDF document text
    • http://bilagroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609478913a62b---redilegexu.pdfIn PDF document text
    • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5421c52fa---zusamuba.pdfIn PDF document text
    • http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609caf3d2d4c6---xinezewu.pdfIn PDF document text
    • http://bindashnews.com/userfiles/file/gogubebevijizo.pdfIn PDF document text
    • http://tkhomedeco.com/assets/uploads/ckedit/files/20210613152719.pdfIn PDF document text
    • https://beautyyaurient.com/editor_upload/file/1714047625.pdfIn PDF document text
    • http://russkiivopros.com/images/FCKeditor/file/zagif.pdfIn PDF document text
    • https://aradovan.com/userfiles/file/38365591648.pdfIn PDF document text
    • https://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/688ab5ecf7016c0f9b5e4f419e6530cc/33408746912.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=mussels+and+baconPDF 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_off000104f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104F8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011d0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D0F 10304 bytes
SHA-256: 1d4a300a2f2b3c51a3c16252f54a15caf615b7b23b1ee8dfe2093bca78b93b3d