Malicious PDF — malware analysis report

Static analysis result for SHA-256 22fc29c24cb1e60b…

MALICIOUS

PDF

366.0 KB Created: 2021-07-08 12:08:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: d22e56fd4904a9dfcda1a5e9f273edda SHA-1: 986bc63358ae8a57e6573cc1ee71f9f2ce3506f8 SHA-256: 22fc29c24cb1e60bf7f847d17c492f91ec0a20bb5144734aae941866236932b9
166 Risk Score

Malware Insights

MITRE ATT&CK
T1059 Command and Scripting Interpreter T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and ClamAV as malicious. It contains numerous links to compromised WordPress upload directories and other suspicious domains, suggesting it is part of a phishing or malware distribution campaign. The 'SE_CLIPBOARD_COMMAND_LURE' heuristic indicates the document instructs the user to copy and paste content into a command-line context, a common technique for executing malicious code.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9896

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
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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.
  • 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 http://mosjob.ru/images/file/vidupobilobiwoxewewone.pdf In PDF document text
    • http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1375b4b8e5---3082758498.pdfIn PDF document text
    • https://autoradiator.mn/uploads/ckfinder/files/vilunuroz.pdfIn PDF document text
    • https://chefinhogourmet.com/wp-content/plugins/super-forms/uploads/php/files/01b1241564f60a7c2dbf7fd27c0014ed/zawijowelanimomesut.pdfIn PDF document text
    • http://wingprocess.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/togujobepigavotu.pdfIn PDF document text
    • http://petra-dario.info/upload/datoteke/29576334258.pdfIn PDF document text
    • https://beribuket.ru/wp-content/plugins/super-forms/uploads/php/files/e3bf734add45297399159d36f2802b69/rasenabajesi.pdfIn PDF document text
    • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/16f4f477340d343433ca15c29953249a/fogad.pdfIn PDF document text
    • http://artospace.com/pics/file/45519631904.pdfIn PDF document text
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/16094f3eea3f29---rutereterevujimufuvezozex.pdfIn PDF document text
    • https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/6787c390412b3f0f39c32528a897fd19/dorafanapoposugun.pdfIn PDF document text
    • https://ltanimalpark.com/wp-content/plugins/super-forms/uploads/php/files/e885e5da3f694d2852cb898574eb4dc1/jeduzow.pdfIn PDF document text
    • http://metaglas.kr/userData/board/file/39078865574.pdfIn PDF document text
    • https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/e81e23bd061faa2063e6ddf433bedc6c/75548853108.pdfIn PDF document text
    • https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/2de309faed58124b7351b1ac09d52b04/6628059382.pdfIn PDF document text
    • http://stroisvias.ru/userfiles/file/76856568546.pdfIn PDF document text
    • https://djennebeads.com/nbloom/fckuploads/file/51158500806.pdfIn PDF document text
    • http://php-lounge.de/userfiles/file/50871597641.pdfIn PDF document text
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/160773472d6b55---76942818436.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/3eca8d5b7a0702722848b1f9f0bd8eb3/2941170539.pdfIn PDF document text
    • https://gdr.co.il/wp-content/plugins/super-forms/uploads/php/files/b31fddc546ad7fd6929a7142cfd14905/20502791613.pdfIn PDF document text
    • http://ekonopuntos.com/campannas/file/giginubefew.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=upgrading+and+repairing+pcs+20th+edition+pdfPDF 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_off0005479c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5479C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00055fae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55FAE 18100 bytes
SHA-256: c00a55c51f6b4722d7d83ba099c93f3c6931d92af983ecaa50475289b2441689
font_02_sfnt_off00058f2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58F2A 11100 bytes
SHA-256: 191a327e636a8c22d4b0cac0d13bae0fb0492e454544fae4546e725f83a9a0e4