Malicious PDF — malware analysis report

Static analysis result for SHA-256 6feabefa3dca4d08…

MALICIOUS

PDF

81.4 KB Created: 2021-08-29 01:49:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 845571775fea46ef8dd347fdf525c7fe SHA-1: 122c5846d1ac399a3db8dc2d39383833b918d67c SHA-256: 6feabefa3dca4d08dca7adaf2b763e305af9cef0ced25bd12d61f0de684bc608
156 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links pointing to compromised WordPress sites, which in turn host other PDF files. This suggests a link farm designed to redirect users to malicious content, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/6e6e06e83714d6732d21f5ec614d48d4/vebegonubiduz.pdf In PDF document text
    • http://ophirtonhotel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16085c0ec44224---werigujexolewididezibefun.pdfIn PDF document text
    • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dee9abadbaa---norirubupofegilagixip.pdfIn PDF document text
    • http://sino-web.net/filespath/files/20210812164411.pdfIn PDF document text
    • http://duocmyphamcongty.com/app/webroot/uploads/files/76741863159.pdfIn PDF document text
    • http://hamdard.com/hamdard/app/webroot/img/ckfinder/userfiles/files/10110634745.pdfIn PDF document text
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/59c3c5e4def71e6de00b4cbcecf1e170/16433006854.pdfIn PDF document text
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/75vgrsqvcksel2qclgfa1j7asq/dugolegigeminubidewelagal.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/160faf30c0411c---17138589825.pdfIn PDF document text
    • http://xn--b1akwe.xn--p1ai/userfiles/file/nazaturolejafetom.pdfIn PDF document text
    • http://galeriejacqueselbaz.com/userfiles/file/74700786341.pdfIn PDF document text
    • http://jrjohnsonfamilyreunion.com/clients/0/09/090f04f22b165063c0e57546eb93b169/File/71827520355.pdfIn PDF document text
    • http://bursaceyizgelinlik.com/images_upload/files/gulaj.pdfIn PDF document text
    • https://fmpride.com/wp-content/plugins/super-forms/uploads/php/files/071ec8dc6065e0e4597b28ac4fcd0304/dejokesekubalisetesinewox.pdfIn PDF document text
    • http://biurod9.pl/public/userfiles/file/87355258732.pdfIn PDF document text
    • https://olboihorgaszto.hu/editor_up2/zokuda.pdfIn PDF document text
    • http://bettaletroom.com/file_media/file_image/file/1910493678.pdfIn PDF document text
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/160a011e8b544a---rowomezuboge.pdfIn PDF document text
    • http://nanumed.ro/uploads/files/86446830887.pdfIn PDF document text
    • https://xn--78-6kce7dfhb9dwb.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/3b11bd8b5f76ddb9eb24f4dbc3778740/37007283231.pdfIn PDF document text
    • https://mastirz.com/userfiles/files/firofazuzibe.pdfIn PDF document text
    • http://neuchina.org/userfiles/file/wijunimirusolokijetoxexax.pdfIn PDF document text
    • http://quranday.org/userfiles/file/xipasosokazosawomosumita.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3vuEKuznOb8/uplcv?utm_term=mononucleosis+can+you+get+it+more+than+oncePDF 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_off0000d9ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9EE 17152 bytes
SHA-256: f78f0e380cf872f7638683f2c55726799730569bda358941ecf7e7f1a06816e6
font_01_sfnt_off00010638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10638 10884 bytes
SHA-256: 999286ab4ca4001571ef57b13f737a2918836a0b0ab7f735c8eb344c17853e4e
font_02_sfnt_off00011f4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F4E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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