Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea0f77233a95f5ad…

MALICIOUS

PDF

91.1 KB Created: 2021-07-15 12:08:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 535090de5e36285c11b24810c6eab89a SHA-1: e33640d13ff310597f01ef88188a984e2062d7c3 SHA-256: ea0f77233a95f5adedf273868d10aeda2fdec1f938ba618d36ca0bc62348f51a
216 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which appear to be compromised or disposable hosting. The critical heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document's primary purpose is to solicit sensitive recovery information from the user. While no scripts were directly extracted, the presence of embedded URLs and the nature of the heuristics suggest a phishing or social engineering attack aimed at credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9822

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
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/0afarmerc3bkeqgjvbv36vlub1/sujavamiwaxolegidujovo.pdf In PDF document text
    • http://argentum.com/wp-content/plugins/super-forms/uploads/php/files/pc8u40l2s8uto7628srmi0maik/tadudiwemesufidota.pdfIn PDF document text
    • http://ladyqueen.it/userfiles/files/27553533982.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/qn9dbk5iai6jvvfdnjao6p69mp/bujibajurevobukakosaw.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c23d712e5d8---namus.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070aa9ca3b39---43313035173.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa3848510a2---xeluvera.pdfIn PDF document text
    • https://tlpnw.com/wp-content/plugins/super-forms/uploads/php/files/087991b0e3bc08f1bc83124b6c64d083/83870621240.pdfIn PDF document text
    • http://tubietelbar.hu/uploadfile/69085338506.pdfIn PDF document text
    • http://ndt-ultratech.com/files/nenurow.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160bb8faa0c3a9---kunawuvigatudulesavudof.pdfIn PDF document text
    • http://bougerpourstarlight.org/clients/c/c6/c668404594a1c08d975ab50c7bec58f6/File/lisexepikusaj.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d8a408fea0---dalefid.pdfIn PDF document text
    • http://cageart.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16080d13bb5377---nofasubu.pdfIn PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac628ec6db2---44847051698.pdfIn PDF document text
    • http://bettaletroom.com/file_media/file_image/file/26286776132.pdfIn PDF document text
    • http://skrabl.pl/www/rpbd/fck/file/lakareb.pdfIn PDF document text
    • https://pieseautocomenzi.ro/userfiles/file/47942659962.pdfIn PDF document text
    • https://art-lamps-rali.eu/files/file/giselurofujodar.pdfIn PDF document text
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/6aed062f5a601dbea77e4e4f9c74bf8e/satilupibuviniloret.pdfIn PDF document text
    • http://abbwingslynnhaven.com/uploads/files/wamuzenakudibawetuf.pdfIn PDF document text
    • https://ideylia.fr/uploads/file/ripakikapirumelebivutujez.pdfIn PDF document text
    • http://mattstergamer.com/wp-content/plugins/super-forms/uploads/php/files/g8l88ei83pj4ofo1k50v3cptl3/69566486956.pdfIn PDF document text
    • https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/3a0e76c7c13bbd1256947e7b953f80a3/livuxowavoveto.pdfIn PDF document text
    • https://diversified-nj.com/wp-content/plugins/super-forms/uploads/php/files/f20a80023ffebdaa41d21e7c19acaf25/50498307491.pdfIn PDF document text
    • http://grappin-annat-como.com/userfiles/grappin-annat-como.com/file/17120081014.pdfIn PDF document text
    • http://tamlaproject.com/userData/board/file/tunebekimabuzanupagukopa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=add+a+signature+in+pagesPDF 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_off000101e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101E9 17408 bytes
SHA-256: 28d21b813782fd38fa3c3d5b14f013bf9ec65bad29746ebbec4bc5a461b6ec58
font_01_sfnt_off00012f7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F7C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014793.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14793 10484 bytes
SHA-256: 5e241e8a7e912c9efa868acb3fdad84e5e359f87656f0bc3e6a440f365adc9d2

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