Malicious PDF — malware analysis report

Static analysis result for SHA-256 22bc7dd996375509…

MALICIOUS

PDF

89.5 KB Created: 2021-07-06 20:54:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: a277c8fe58e8cace5626076f41e5b68f SHA-1: 612cf907203033efd0c52973568469eb2d40807f SHA-256: 22bc7dd996375509c8bbcc8062f268094e4957a66b33aa88a13c0581484512e5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document functions as a link farm, containing numerous URLs that point to compromised CMS uploads. The primary purpose appears to be redirecting users to external sites, as indicated by the PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics. While no scripts were explicitly extracted, the nature of the links and the ClamAV detection suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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 http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160892c5d6f8ad---40370688856.pdf In PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a02fa7d6e1---xoratokonorizejel.pdfIn PDF document text
    • http://brilsports.ro/userfiles/file///zigapuf.pdfIn PDF document text
    • https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/602e741477afe581ee93cbb23c77bca9/zilazuvozinidij.pdfIn PDF document text
    • https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/80ad875e01f47c9bde661fa054d18cb5/24640107441.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607fa58118c8a---kirariwokozadasokepux.pdfIn PDF document text
    • http://brickform.cz/obrazky/files/13947281461.pdfIn PDF document text
    • http://chinalabware.es/d/files/pevolegozabozavazinajodus.pdfIn PDF document text
    • https://sarujiovalente.com/wp-content/plugins/super-forms/uploads/php/files/bvcjijmrjpitogmt3k8a6vc6l8/79666564670.pdfIn PDF document text
    • http://www.mediacomriccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608a060e11f09---nifitad.pdfIn PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/sdugfuc83flnlhurvjg17mqi7i/gigagevuzenadul.pdfIn PDF document text
    • http://gf-location.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160b659f0b7ce4---60346782237.pdfIn PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cf4a586a0f---bipifaguboluko.pdfIn PDF document text
    • http://nextgt.eu/uploads/file/japejajanirafosudupe.pdfIn PDF document text
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d082c26141---49215011547.pdfIn PDF document text
    • https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/160926b5b0f880---74864060996.pdfIn PDF document text
    • http://dirabrealtors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e3bfaaa1e6---demuzirajopufibixa.pdfIn PDF document text
    • http://www.circoloaletrium.it/wp-content/plugins/formcraft/file-upload/server/content/files/16078d8b1037a8---virumolisajapiji.pdfIn PDF document text
    • http://talleresjpg.es/img/file/9274020421.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/t4h8mvgj6vcgk59qmfq7cneh22/belinilonurodega.pdfIn PDF document text
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608cb36d4fc41---32307621669.pdfIn PDF document text
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160a77cdc7cb75---34262926255.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=american+horror+story+axemanPDF 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_off0000fb03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB03 18060 bytes
SHA-256: a4065f029b3436aefa9d9bfcaac12284f620cd0f0091e6e96543896e73152356
font_01_sfnt_off00012931.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12931 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014148.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14148 10648 bytes
SHA-256: fb823427ae29ef13bdaa195fa9048b2a779f679732b695bf6e4b977541f90945

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