Malicious PDF — malware analysis report

Static analysis result for SHA-256 1015ba5b747a5408…

MALICIOUS

PDF

1.00 MB Created: 2021-06-30 10:20:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1b48d7d6ce6711c2c66c2aa04aa9f33d SHA-1: 1a9f931cb4741d34ff4233c0b0f1fd0055d17f5e SHA-256: 1015ba5b747a54080e9416fda96a0df30ab44eb5645e503bb8a74682f36a94e5
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly indicates the document's purpose is to trick users into paying fees for a non-existent prize or parcel. Multiple URLs point to compromised WordPress sites, suggesting a distribution infrastructure for such scams. The ClamAV detection further supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3894

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.
  • 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://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/ph4il1mho6ttr61ool95iq0f4v/74729992694.pdf
    • https://felix-schulze.biz/wp-content/plugins/super-forms/uploads/php/files/oqdft4h181dr10qv3l8ijfclvk/62466840703.pdf
    • http://firmykominkowe.pl/Obrazki/edytor/file/83356312144.pdf
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1608c3e3c5c052---74572822337.pdf
    • https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a6c27a20fea---25498535082.pdf
    • https://nepalaviationmuseum.com/userfiles/files/paziwax.pdf
    • https://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/12d8f41d1021dfcdf42bfb02d71af542/63302364203.pdf
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/77075151016.pdf
    • http://msiutilities.biz/documents/5232673456.pdf
    • http://aelma.com/sites/default/userfiles/file/mepegususoxozivebaxet.pdf
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bd5daf6a13e---fekirosazu.pdf
    • http://sivam.pl/files/file/xefadazebezafax.pdf
    • http://aftckwt.com/uploads/file/tenugomifozuxuti.pdf
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f8ed12eb49---9720959291.pdf
    • http://fresh-j.info/images/uploadedimages/file/15369062922.pdf
    • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9b88446b9d---50137581249.pdf
    • http://urbanconstructions.org/images/uploadedimages/file/99589846932.pdf
    • http://wildpflanzen-planung.de/file/69448509551.pdf
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ed4e14f0c6---ralazevobelidip.pdf
    • http://dj-venci.com/uploads/pages/files/lafaziwakejesava.pdf
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d2d90c7935d---rasogimeriwivigakiri.pdf
    • https://assurancemauricie.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607135f340e70---nujojilovubeva.pdf
    • https://cordovajewelry.com/images/file/zivaretetu.pdf
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b61f63b3c15---59231033542.pdf
    • https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b750bc6af4a---87354890663.pdf
    • http://praguetransfer.com/files/file/16033427748.pdf
    • http://esipro.fr/userfiles/file/98428499287.pdf
    • https://www.finestkindcharter.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d55345be27---goxapovupagebalib.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=pcra+quiz+questions+and+answers+pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000f8172.bin
c0023d1a6db983a1c6146e7415d5c76755b3518de767207d20a5ca26d90cd489
pdf-font-stream PDF embedded font (sfnt) at offset 0xF8172 22680 bytes
font_01_sfnt_off000fb236.bin
2142c7ea164d852acaf61478ef249362a7e7aa8993dbcc33b069ebf83e425ba5
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB236 5632 bytes
font_02_sfnt_off000fc4c1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC4C1 16792 bytes
font_03_sfnt_off000fdce4.bin
ba8554af1e5333548dd15462ff52e3d2375225ba7eda65e74b64ea767ea8e143
pdf-font-stream PDF embedded font (sfnt) at offset 0xFDCE4 10960 bytes