Malicious PDF — malware analysis report

Static analysis result for SHA-256 67d326fa712b485b…

MALICIOUS

PDF

70.3 KB Created: 2021-06-25 19:15:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 25ab759896d07e6381dfc52cae438650 SHA-1: 92e5cae5f7688e14b0bcaacf32397e67136bc8aa SHA-256: 67d326fa712b485b9adccbec71b23ad2529aebbe2b69410e101ab0cc26b57fae
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised websites, many of which host further PDF files. One heuristic specifically identifies a link to 'http://artistalexanderkanevskywinnerinternationalaward.com/clientMedia/file/zuwexudikadenatudovov.pdf', suggesting a lure to download a malicious second-stage payload. The presence of multiple compromised CMS upload links and a link farm pattern indicates a deliberate effort to distribute malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6630

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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/16099a503c3897---34467342218.pdf In PDF document text
    • http://aarogyamedico.com/userfiles/file/teriti.pdfIn PDF document text
    • https://aplusadvance.com/naver_editor/data/file/91810666587.pdfIn PDF document text
    • https://www.sesc.com.ua/wp-content/plugins/super-forms/uploads/php/files/59mglf8f9sarmvkbh293tkaj96/luzipenu.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/160ac851c894c7---bajoduzudaxetawikilijur.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1606d92718665e---nejotumib.pdfIn PDF document text
    • http://videoacceso.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dff124fcc0---94782889735.pdfIn PDF document text
    • https://apoc.com.au/wp-content/plugins/super-forms/uploads/php/files/0cc80598ca8ec8faeb365a63f68ae9da/32018069365.pdfIn PDF document text
    • https://fietenhaardenenkachels.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16074554c4852d---96015859489.pdfIn PDF document text
    • http://skolicka.eu/foto/images/file/rolerexedosadinemalo.pdfIn PDF document text
    • https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/092b4f720c82066259ff0ea9393a084a/gipusowisufelopamorebosuv.pdfIn PDF document text
    • http://mwflower.com/upimagesfile///84371154088.pdfIn PDF document text
    • http://artistalexanderkanevskywinnerinternationalaward.com/clientMedia/file/zuwexudikadenatudovov.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/01f092e1a68aa965a75340f4ee9a2d3a/30150317840.pdfIn PDF document text
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fa11e9da26---wukukepiwabid.pdfIn PDF document text
    • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c2fffcd5c0a---78804838527.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aaaa05e45a9---jofugamozuraw.pdfIn PDF document text
    • https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/3ovm6h6atf4g9qd63tdk5l4fuk/punebunazekes.pdfIn PDF document text
    • http://tamker.hu/userfiles/file/janawunakuruvidawilewabi.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/50bbb624a674a26e10d6ae8ab2ff3d84/botele.pdfIn PDF document text
    • http://atya.eu/files/file/27693884723.pdfIn PDF document text
    • http://alnoorcity.com/userfiles/file/dopobamis.pdfIn PDF document text
    • http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609562a08f815---94837135716.pdfIn PDF document text
    • http://kleiberit.ru/files/file/sedupawonubijofixerak.pdfIn PDF document text
    • http://campcolefamilyreunion.com/clients/82065/File/68487301103.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=parties+running+for+presidentPDF 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_off0000f924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF924 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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