Malicious PDF — malware analysis report

Static analysis result for SHA-256 94faaab5dbedf23b…

MALICIOUS

PDF

85.4 KB Created: 2021-06-21 00:52:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: f0ebc415ea633ca1a697ed6828bcd48e SHA-1: 226955c1f6b33ba0aea30f7407cb5019b02b44b5 SHA-256: 94faaab5dbedf23b97ed5696fd96d177e76a7a94951d8fa7a1d34ce1235b5052
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The document body, though heavily obfuscated, appears to be a lure for downloading a movie, which is a common social engineering tactic. The presence of numerous links pointing to compromised WordPress upload directories and disposable hosting further supports a malicious intent, likely to distribute further malware or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://esz.jp/img/editor/files/68701361229.pdf In PDF document text
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/1609b97ae89aa1---rivavivamesezibajaxumo.pdfIn PDF document text
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16074fee057e60---jufolebipupizafeko.pdfIn PDF document text
    • https://razdolle.by/wp-content/plugins/super-forms/uploads/php/files/51unrmeoo59mrr5dmi8t87kjr3/mimenosowutuzovodowufe.pdfIn PDF document text
    • https://annekienlen.fr/imagesfile/sejaxilaxijedewitaz.pdfIn PDF document text
    • http://msiutilities.biz/documents/gugatofadikunudozut.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7729315311---miline.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/160829dbf1bbfb---fawoduvekurolupera.pdfIn PDF document text
    • https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160944f2c8ae19---xipodulodosilavixaxe.pdfIn PDF document text
    • https://beautyyaurient.com/editor_upload/file/sikobosejidugojapowifoseg.pdfIn PDF document text
    • http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b9d70c1d63---nujuzuromoriwubigaz.pdfIn PDF document text
    • https://aftaplan.com/works/peepsparty/html/upload_files/file/butonawidupomazugaxi.pdfIn PDF document text
    • https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/g1d1ok2dh7ieagdn90ai9tf303/lodisaruroralifesokojetu.pdfIn PDF document text
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/a17f4c3d157309b44659753d0470a7c2/vuxutemijemogixaruxus.pdfIn PDF document text
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc18f4a45d---gumopalunoge.pdfIn PDF document text
    • https://tlproduct.com/userfiles/file/14314233578.pdfIn PDF document text
    • http://puppies-4u.com/clients/e/e7/e7f09595da74c05d2059c741134300d2/File/kifuwavoronosaraxasekijo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=bharat+ennum+naan+malayalam+dubbed+movie+downloadPDF 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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e09b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE09B 5212 bytes
SHA-256: 23336c8860f8f77d87ed1b9c15e88403f8b5489312292ed7d9cd2c4f0b04144f
font_01_sfnt_off0000f232.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF232 2968 bytes
SHA-256: e61d403420f2a8b0724515550275418710f50c922a2dd4aaef076e5a2a2b06b7
font_02_sfnt_off0000fe45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE45 11048 bytes
SHA-256: 0855103abe4d5e749681164da24e6b491712286d856717d224e72ebed3c69aa9
font_03_sfnt_off0001243e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1243E 16164 bytes
SHA-256: 6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3
font_04_sfnt_off00013953.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13953 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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