Malicious PDF — malware analysis report

Static analysis result for SHA-256 5647fe7167dafc3e…

MALICIOUS

PDF

102.2 KB Created: 2021-07-01 19:15:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 360b72ac2b5d11c1819089731edd44c3 SHA-1: e231424e84c968c04f5de59c275fa7998e4f202b SHA-256: 5647fe7167dafc3e0ee16e9af0f97c9c66d078bb91c41e01910e7d34fa3fc983
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a link farm pointing to multiple compromised WordPress upload directories, suggesting an attempt to distribute malicious content or redirect users to phishing sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution via compromised hosting. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9934

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.
  • 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://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/160c62d3dcc9e4---12844314898.pdf
    • https://www.verpoort-bouw.be/wp-content/plugins/formcraft/file-upload/server/content/files/160a614445dcf4---3925505246.pdf
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16082275431275---90920477192.pdf
    • https://www.helpforbusymums.com/wp-content/plugins/super-forms/uploads/php/files/d51bdd67774fbc1d4098ef4dca3307e0/19255473847.pdf
    • http://digitalpolicycouncil.com/imagenes/file/12362192019.pdf
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/l3r306sndie4gvvrnvqg2orqph/bazidavodakazomezowo.pdf
    • https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/63p5v2uifuk48mnq6r46f4nvi5/78887483991.pdf
    • http://xn--vb0b83rba554gca.kr/page_data/file/20210624202253.pdf
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5237c416b---15908475827.pdf
    • https://rhagro.com.mx/wp-content/plugins/super-forms/uploads/php/files/39dbd3303d4d5e379c18f6c4bdcbbd90/52811127365.pdf
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160757faab4cbb---fupafuzexizu.pdf
    • http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16080995c084b0---kebegib.pdf
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083393eef112---tadizitavajofuvuki.pdf
    • http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/160b7454014f0f---mojuzokujokunogazimizup.pdf
    • https://mobistore.co.nz/wp-content/plugins/super-forms/uploads/php/files/40edc12a801f927aefb41aecce673d6a/42011044392.pdf
    • http://cricalliance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091cc2439b4c---58548536947.pdf
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160983ffc8bcc2---dazarusewarelinu.pdf
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160931bfe8910a---28060512177.pdf
    • https://www.horisunmauritius.com/wp-content/plugins/super-forms/uploads/php/files/687224a5fdcc72dc9aa4171a14e95aea/93578051247.pdf
    • https://oversaslogistica.it/file/dapage.pdf
    • https://soudurelausiere.ca/upload/editor/file/2953945334.pdf
    • http://avsa.org/sites/default/files/images/files/kigekikekidafejemok.pdf
    • https://wisserarm.nl/app/webroot/files/userfiles/files/kanonadivelirowutiko.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=mdc+kendall+map
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012d6e.bin
e3ce7daddcceacd8d65e2f0791898eca0bda7eaf4897b4d31af5546359487e92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12D6E 18132 bytes
font_01_sfnt_off00015cf2.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15CF2 16792 bytes
font_02_sfnt_off00017509.bin
e099dd2e975ccac92b3b56a974a7fddec29ccc2990dc11652e42a35ab66a64f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17509 10184 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.