Malicious PDF — malware analysis report

Static analysis result for SHA-256 614ea97db7d2977d…

MALICIOUS

PDF

95.6 KB Created: 2021-06-18 03:03:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 2e2c03c7e6a1e9023562c7989e7f4e7d SHA-1: 507511744d250141da1b3a36f85573b080ca70e6 SHA-256: 614ea97db7d2977d180c2b5bce5a9abcecad0d155c0de0ad0343fec7db5b9bfd
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links to external websites, many hosted on compromised CMS upload directories, suggesting a link farm or phishing lure. The document body, though heavily obfuscated, contains references to 'League of Legends playtime' and 'wkhtmltopdf', indicating a potential lure to attract users to malicious sites for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 https://oniceh.ru/uplcv?utm_term=league+of+legends+playtime PDF link annotation
    • https://forex-robo.org/wp-content/plugins/super-forms/uploads/php/files/8a4d9f18fb96ea4a5b164644d71a670a/38632269349.pdfIn PDF document text
    • http://s8radziejowice-paszkow.pl/userfiles/file/34932766020.pdfIn PDF document text
    • https://ecoinkworld.com/wp-content/plugins/super-forms/uploads/php/files/75a318ce5ce0de7ac13696d7cda19c39/35362798978.pdfIn PDF document text
    • http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/1609fb024dab94---86769799105.pdfIn PDF document text
    • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160a61946ce45d---takonofimulozonetur.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b730b8ff1c---22941375472.pdfIn PDF document text
    • https://fablab808.com/nbloom/fckuploads/file/guxodinesudupataj.pdfIn PDF document text
    • http://www.misshandicap.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1608a8bd6627a9---xewixumapedepanat.pdfIn PDF document text
    • https://suma.ca/upload/editor/file/94857294057.pdfIn PDF document text
    • https://sieompaysdebray.fr/lesiom/txt/imgadmin/file/46886470859.pdfIn PDF document text
    • http://www.circoloaletrium.it/wp-content/plugins/formcraft/file-upload/server/content/files/160bdf6dbf16a2---sonope.pdfIn PDF document text
    • http://hagelkonzept.de/userfiles/file/87481293396.pdfIn PDF document text
    • http://drvision.org/wp-content/plugins/formcraft/file-upload/server/content/files/160be10a71457d---mepumetenizogujetixurej.pdfIn PDF document text
    • https://xn----7sbbjg7ctfs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/ee07a984eb7ed894fe149778daf30fe2/41897392250.pdfIn PDF document text
    • https://cspdental.com/wp-content/plugins/super-forms/uploads/php/files/ef25bf9b53ec2ad4e1dbbe8785ebbea0/lotivego.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • 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://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC4A 4140 bytes
SHA-256: adea4eede6db0416932701fc55cce5bb7a03549977ca31c9c45f9b64779b5923
font_01_sfnt_off0000faeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAEB 5308 bytes
SHA-256: 303698218a161b5984dc5e04bfd338ca0f60d005d3234371f3c57600d35f3fd2
font_02_sfnt_off00010cf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CF7 5800 bytes
SHA-256: 8aa56e6eca7df4f35835a05af2de7ab964c5473fb2769d0567640323f989c6f0
font_03_sfnt_off00011b84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B84 3956 bytes
SHA-256: a18456f0b993d4ca3e1d778831b2dd2b4c58153c4ce7430e101f900c6faec31f
font_04_sfnt_off000129cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129CC 13552 bytes
SHA-256: da23f49b7abd827fd7c98a1e9489c75fc60b15e1fc8242a13aa03c982ea2a8cd
font_05_sfnt_off00015638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15638 17288 bytes
SHA-256: 177799657a77a1c58336f446e2b31d025b195f6486d8707faf0896a824afd957

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