Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d572332934c2fcf…

MALICIOUS

PDF

77.1 KB Created: 2021-05-27 21:16:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 7bf9f20fb23ce84d641f65ab3c7a41e4 SHA-1: 86d9d809f49ecb33ca9e239b0e0c4f60f21cb866 SHA-256: 3d572332934c2fcf40face28cc8f048a208ffbfd43bac8594f6bc31a17d94a22
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains references to 'Aimbot gta samp 0.3 dl', suggesting a lure for game cheats. Numerous embedded URLs point to compromised WordPress sites and other disposable hosting, likely serving as part of a link farm to distribute further malicious content or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://allytemp.ru/uplcv?utm_term=aimbot+gta+samp+0.3+dl PDF link annotation
    • https://accesoriosalmayor.com/images/userfiles/file/rimajujarem.pdfIn PDF document text
    • https://mrmusicfoundation.org/wp-content/plugins/super-forms/uploads/php/files/b69fe1tgtile459sreaofr4tlp/88094159190.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a38bc74d750---defiji.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/f1a87b8a2a68bc3c091f045bc87623cf/48185179212.pdfIn PDF document text
    • https://diversified-nj.com/wp-content/plugins/super-forms/uploads/php/files/5dbe8d74dd79dccbf41f1674ab3e9641/1377650414.pdfIn PDF document text
    • http://jagatjyotischool.org/jagatjyotischool/userfiles/file/vawozotaxujudisog.pdfIn PDF document text
    • https://trellisdundee.com/wp-content/plugins/super-forms/uploads/php/files/fcd919d7721f1628116493c582b0b963/63064605431.pdfIn PDF document text
    • http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f2373b88e8---pukoxa.pdfIn PDF document text
    • https://glycocalyx.nl/userfiles/image/file/lotelofolem.pdfIn PDF document text
    • http://scheidenschiedam.nl/uploads//file/norojazunifalukiniku.pdfIn PDF document text
    • https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/be6c7d26980d9ac43e144fc88d59216a/gijasuso.pdfIn PDF document text
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/ca200367f6bad374ab11d5de175c4388/28290011682.pdfIn PDF document text
    • https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/95ea796b4be63025e92ddefc77230c35/93697612335.pdfIn PDF document text
    • http://angelescare.com/userfiles/file/kajutiroxilok.pdfIn PDF document text
    • http://uro-medical.pl/zdjecia/fotki/file/sekevujekinojebinosuxa.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085163c9cb73---38455399514.pdfIn PDF document text
    • http://project-lovcen.me/userfiles/file/71428118623.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • 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://scripts.sil.org/OFLIn 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_off0000d776.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD776 5648 bytes
SHA-256: b243ad76c84b0f4dcb84f866b35a7b49a6aa97f792f931489ea3cee6e8665774
font_01_sfnt_off0000ea9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA9E 12160 bytes
SHA-256: ca328a5dd70c2a6928bd2759efa2fa89c0e36d06d5e006abd9fe0dd3c3cc3bc5
font_02_sfnt_off00011233.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11233 16240 bytes
SHA-256: 22e3a265051de049fcf7fb23205ac081a5706510055ebc504bc7ee755b3f2d84

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