Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee46a2f16a165bbe…

MALICIOUS

PDF

147.8 KB Created: 2021-08-11 11:36:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 6441e454ccd10505538d1a32d425aeef SHA-1: 31d79e673027a6148195152a4dfb2584e3e217ec SHA-256: ee46a2f16a165bbea76b439450f79cdfdf06c5931291365ba6cadfe4b2623ffd
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating it likely contains a malicious payload. The presence of a 'Macro/content-enable lure' heuristic suggests the document is designed to trick the user into enabling content, which is a common tactic for malware droppers. Several URLs extracted from the document point to potentially compromised or disposable hosting, likely serving as download locations for secondary payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

Heuristics 7

  • 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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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://sushigonewildtogo.com/uploads/files/jivodikisugozoxu.pdf In PDF document text
    • http://azseal.net/uploads/userfiles/file/tufuwur.pdfIn PDF document text
    • http://bbpcosmetics.com/admin/upFiles/2021-6/file/nimeku.pdfIn PDF document text
    • https://intrigantka.ru/images/userfiles/file/wuvodovese.pdfIn PDF document text
    • https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/ada4c94da5a112e447543bd48a5752f9/60570838.pdfIn PDF document text
    • https://bikinibody.be/wp-content/plugins/super-forms/uploads/php/files/q0ukggvqq8f5atiiqfeglkeu04/99204682114.pdfIn PDF document text
    • https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/160f377b45efe0---mekepewivaxejesikufu.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/q2ho68uabihtik03lfb2dra8a0/nitoxirotaxolu.pdfIn PDF document text
    • http://essiac.cz/UserFiles/file/26936295468.pdfIn PDF document text
    • https://travelsafeway.com/userfiles/file/xatipatulumemoli.pdfIn PDF document text
    • https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/29f1a02cedf49249738b47a5c62dc15b/sonuvanijepenirawuveweg.pdfIn PDF document text
    • https://mmagame.com/userfiles/file/23427922233.pdfIn PDF document text
    • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/838f9724b55f76407fd709abaa1cb157/90804962028.pdfIn PDF document text
    • http://augustaelectricalwork.com/editorData/file/samiwibat.pdfIn PDF document text
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b597e638892---95412040882.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606e68aaf23eb---badufetevuzewezit.pdfIn PDF document text
    • https://mailing.crpm.ch/ck/ckfinder/userfiles/files/38686576385.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607190745e7c1---25622477219.pdfIn PDF document text
    • https://livstyle.ro/home/livstyle/public_html/uploads/files/56224060558.pdfIn PDF document text
    • https://nestuby.com/userfiles/file/13272961978.pdfIn PDF document text
    • http://watthaistuttgart.de/userfiles/file/manuwutanijisowewefozed.pdfIn PDF document text
    • http://sgd42.ru/userfiles/file/46224618189.pdfIn PDF document text
    • http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610b36572fbd1---nefujutezerifasojuwowe.pdfIn PDF document text
    • https://accuratesearch.com/userfiles/file/48638283652.pdfIn PDF document text
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d02ed6dcffd---wigikaxuvefukisa.pdfIn PDF document text
    • https://implantsdentairesdesmoulins.com/upload/editor/file/guxijafonegujosotiji.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=global+problems+and+the+culture+of+capitalism+%286th+edition+pdf+free%29PDF 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_off0001dd0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DD0A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001f51c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F51C 19032 bytes
SHA-256: af4f66cf14fc36c96ebf0ea894eb521ef20d1cbc5afaf10ac761a823ade20bcb
font_02_sfnt_off00022520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22520 11488 bytes
SHA-256: 607e54b56de512fb887a0ddb30180140ef658716467ed75d816b9ffef60d4bfc

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