Malicious PDF — malware analysis report

Static analysis result for SHA-256 39aa8f6a0574a785…

MALICIOUS

PDF

82.9 KB Created: 2021-08-22 01:16:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 85d7c206b434820b32b49405fd60d92f SHA-1: 7fc47fbd148125c979ddf18a6d3dd866fcbe9835 SHA-256: 39aa8f6a0574a7855ba71a7e33595947100e4af7aee15d2a50ef6ed522e5eeff
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It impersonates a cloud document lure, directing users to a link farm of disposable hosting sites, many of which are compromised WordPress uploads. The primary goal appears to be phishing or distributing further malware via the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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
  • 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.
  • Cloud document impersonation lure medium SE_CLOUD_DOC_LURE
    Document impersonates a cloud file-sharing service such as SharePoint, OneDrive, Google Drive, Dropbox, Box, or Microsoft 365 and asks the user to open, verify, or access a shared document
  • 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://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/c1d2a7447be9d12f7d0d57420a125160/mafamakowowinu.pdf In PDF document text
    • https://bindazzled.com.au/wp-content/plugins/super-forms/uploads/php/files/ef94721119066f14dd602caf510215d0/2738714294.pdfIn PDF document text
    • https://anpheatingandac.com/nbloom/fckuploads/file/83037304326.pdfIn PDF document text
    • http://lejonhund.com/upload/talefokabonalol.pdfIn PDF document text
    • http://halmar.info/userfiles/file/23166671459.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/45297517758.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160882ab204521---woluxetelipereduva.pdfIn PDF document text
    • https://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/b799d48c366ae84073dce28a4aed306c/72462709241.pdfIn PDF document text
    • http://it-hair.com/userfiles/seligeguwitebobatewo.pdfIn PDF document text
    • http://ruegen-ferienhaus-schneider.de/userfiles/file/lanunafemapinidowir.pdfIn PDF document text
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078c2094ca5a---57730196173.pdfIn PDF document text
    • http://np-laser.com/upload_fck/file/2021-8-9/20210809015458848675.pdfIn PDF document text
    • https://www.chortho.co.uk/wp-content/plugins/super-forms/uploads/php/files/489aenuvpemob24fqriuh22pai/dirosenapozo.pdfIn PDF document text
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9448afc69---33710750411.pdfIn PDF document text
    • http://baschin-heizung.com/meineBilderAlbertGrundschule/file/pebomumonoje.pdfIn PDF document text
    • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c5a39bcca80---41438850796.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607123a6c2d86---girekikefuwiji.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/d00a2a584c25c43f763016e2bdcd2635/47971796491.pdfIn PDF document text
    • http://ellev.fr/upload/files/wizosuxizujij.pdfIn PDF document text
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f3bf0a3f42---fixugedizidaxubigakekeve.pdfIn PDF document text
    • https://europeancustomtailor.com/wp-content/plugins/super-forms/uploads/php/files/e5880f7a60562828f907f82d5789f803/faligeloviletizawonir.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=google+drive+unlimited+storage+mod+apkPDF 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_off0000de9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE9E 17176 bytes
SHA-256: e5565846ea114a1ecdbde6c8a4af6bfeb984947bd40b3faac039fd286ade37b1
font_01_sfnt_off00010b18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B18 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001232f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1232F 11032 bytes
SHA-256: 0b286a668ce628eb14f124d9986f5240544d95d4b282d2fb3be658ed21005729

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