Malicious PDF — malware analysis report

Static analysis result for SHA-256 5696d5d9dbbd986a…

MALICIOUS

PDF

73.7 KB Created: 2021-09-05 07:00:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: fa74785e3e77fa3ebc5b14c068c500bd SHA-1: 00d5649b98379d829038b0a2be61c40d7d0da64d SHA-256: 5696d5d9dbbd986ae9a1145f5fe37cf0dcdbdfb0307a397072f16a708fe62206
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to compromised websites and disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://findmealocalpainter.com/insurazon/admin/userfiles/file/dimapevu.pdf In PDF document text
    • https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/79ee593854c87fa99ad474f7e1f1b28e/nibumo.pdfIn PDF document text
    • http://brukbet.com/user_images/file/tepadijipib.pdfIn PDF document text
    • http://hagelkonzept.de/userfiles/file/55922289016.pdfIn PDF document text
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160c5f1e9260f2---xegozaxibuvo.pdfIn PDF document text
    • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/7d89a1f716cf44bbee7065309f90b6de/tezugozevibolarotab.pdfIn PDF document text
    • https://lolakarimova.uz/ckfinder/userfiles/files/90528529768.pdfIn PDF document text
    • https://rm-parketi.si/uploads/bifulefavadajivusameda.pdfIn PDF document text
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607473bc257cc---19050758475.pdfIn PDF document text
    • http://papianiarch.it/userfiles/files/wegufozipef.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16075d0e6c91a5---93967592830.pdfIn PDF document text
    • http://mehmetrasimmutlu.com/icerik/file/kipodudodin.pdfIn PDF document text
    • http://taborcapitalpayment.com/clients/d/d0/d0a3925ee25d0adc8806453b18bccccc/File/gudurudadalasob.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/up1ngqtgd7rjvg9q3i9ebgksh7/gexukukapazaxozag.pdfIn PDF document text
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/27bf8ff57b7fa7a247275b6b09043246/viretufiwubi.pdfIn PDF document text
    • https://soechi.com/userfiles/file/69727966461.pdfIn PDF document text
    • https://bnbtravels.com/ckfinder/userfiles/files/dubijunaboguwukomanimifek.pdfIn PDF document text
    • http://www.festivalmarrakech.info/wp-content/plugins/formcraft/file-upload/server/content/files/16086a5ee63a8d---xeferewavalenuperuxa.pdfIn PDF document text
    • http://psychanalyste-gard.fr/ckfinder/userfiles/files/7083275956.pdfIn PDF document text
    • http://www.centralperdana.com/file/11981419422.pdfIn PDF document text
    • http://alfonsoguiggiarchitetto.it/userfiles/files/7677463765.pdfIn PDF document text
    • http://escuelasfutbol8.com/docs/files/52593662433.pdfIn PDF document text
    • http://hoteldanang.vn/uploads/images/files/xonevukejariwepezetunuva.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c98505ee758---77818700868.pdfIn PDF document text
    • http://alexanderkanevskyartgallery.com/clientMedia/file/rozeme.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=engineering+science+n4+question+papers+and+memos+pdfPDF 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_off0000bde8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDE8 16004 bytes
SHA-256: b94c066cd956e89e16b87a8e42567a263c7b77a04d2c87d9b6bee5b42de81cdd
font_01_sfnt_off0000e712.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE712 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ff29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF29 11224 bytes
SHA-256: 17a631acbe6bb8c995dab19b3c3cbc545c6479a06f36b2207c0f6128ff400007

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