Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ba47473bcf2ae8c…

MALICIOUS

PDF

69.7 KB Created: 2021-09-27 08:12:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: c9f8219b6a4998411c3b6615e997ccc7 SHA-1: 4194fa8e7f357bd441120e9e74dd9c4f85b27b0f SHA-256: 3ba47473bcf2ae8ceb58824f688f874a3559f63106a7499ddd4c2ac6a883cf79
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous external links, with one specifically pointing to 'https://oniceh.ru/uplcv?utm_term=open+the+gallery+on+my+phone', suggesting a phishing or credential harvesting attempt. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports that the document is designed to host many links on disposable domains, a common tactic for distributing malware or conducting phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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=open+the+gallery+on+my+phone PDF link annotation
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/16149a3fa4e993---kunudusofo.pdfIn PDF document text
    • https://goooinggroup.com/userfiles/files/20210923_044609.pdfIn PDF document text
    • https://hunglivet.com/uploads/files/202109130018334547.pdfIn PDF document text
    • http://www.fishandcosolicitors.com/uploads/files/79954262089.pdfIn PDF document text
    • https://debo-fit.be/userfiles/file///lifubaxutibaxibepivomaxo.pdfIn PDF document text
    • https://tigapilar.com/upload/files/rakivukizaferefilebi.pdfIn PDF document text
    • http://hoachattn.com/image/files/nopagobexokowiguvodubuge.pdfIn PDF document text
    • http://www.galiantsolutions.com/emailimages/file/79263391527.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16141639b62f77---ritokuvaxivojofapuwaxol.pdfIn PDF document text
    • http://roletyhanarol.pl/files/file/japikoneru.pdfIn PDF document text
    • http://inspeq.eu/public/files/41508223466.pdfIn PDF document text
    • http://travelcenterpuntos.com/campannas/file/98989954589.pdfIn PDF document text
    • https://sofupingame.com/calisma2/files/uploads/83327735679.pdfIn PDF document text
    • https://energooptima.hu/upload/File/70250924196.pdfIn PDF document text
    • http://diegogenna.it/userfiles/files/resowalewulegoxofagasujox.pdfIn PDF document text
    • http://grandfiltr.com/files/file/31044598143.pdfIn PDF document text
    • http://blossomtour.net/FileData/ckfinder/files/20210910_2140ABA655E34DBC.pdfIn PDF document text
    • https://butyfarm.mm520.net/userfiles/files/71326506365.pdfIn PDF document text
    • http://xn--ob0bjxt9h99icicrvkksa421cwwp7hiv4d6a.net/ckfinder/userfiles/files/69964352366.pdfIn PDF document text
    • http://bnblspecialities.com/userfiles/files/26382316501.pdfIn PDF document text
    • https://tahuacoop.com/cms_gpadmin2015/sgi_userfiles/userfiles/files/70487335571.pdfIn PDF document text
    • http://gs-metals.com/filespath/files/20210903215130.pdfIn PDF document text
    • https://himalmanpower.com/ckfinder/userfiles/files/vemolam.pdfIn 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://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_off0000b09b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB09B 10576 bytes
SHA-256: 186872ba4d9aab8fbc6dc00e1d121a3ed6adb04069d2d92d0dcfc7ebf8cc422b
font_01_sfnt_off0000c8a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8A6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e0b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0B8 15324 bytes
SHA-256: 01a5be3a8aaf2ff272ecb19f604b6639731c3fe93aade573b36e505e6235eba0

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