Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d6662f8289116fe…

MALICIOUS

PDF

100.4 KB Created: 2021-07-07 04:49:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 63c6ea41d38776b3332a4218159cf8b2 SHA-1: 0c3ab087a05ac79e3d4c794eaf22c1cfada616c7 SHA-256: 5d6662f8289116feb80743967420089342fcff82c11d6220497a6d722f4bd43a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ClamAV and an ML classifier. It functions as a link farm, containing numerous URLs that point to compromised WordPress sites and other domains. These links likely lead to phishing pages or further malware downloads, indicating a malicious intent to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9928

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://philabc.ru/uplcv?utm_term=allure+of+the+seas+itinerary+2020 PDF link annotation
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1609aac12b3c4e---jamigiwan.pdfIn PDF document text
    • https://ive-cal.it/file/vubetebixisawodivarev.pdfIn PDF document text
    • http://thietbixanh.net/uploads/files/fapejivesuvo.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/3fe3924dad0731cb1f3cfa936e67f6ed/bigivavokiretabafed.pdfIn PDF document text
    • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/c603fa0c8e0a0369e09de7e59f569df5/46226327528.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5a59d313af---daxobutadukiv.pdfIn PDF document text
    • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/16076b7772debd---toxenetede.pdfIn PDF document text
    • http://www.oknookna.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160bd47463a49e---9449204646.pdfIn PDF document text
    • https://www.marvistasales.com/wp-content/plugins/super-forms/uploads/php/files/966c7f6cda4e4156b0657abbe5104a41/62794649386.pdfIn PDF document text
    • https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/lgh3dsb205r6ia9q42i0ekgmgi/perufupurutexafobixowa.pdfIn PDF document text
    • https://vishalahospitality.com/ckfinder/userfiles/files/46945747075.pdfIn PDF document text
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbd7b69f78---wodelisudasereludax.pdfIn PDF document text
    • https://ankaratemizlikcim.com/depo/sayfaresim/file/2349397676.pdfIn PDF document text
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b005eab7985---sivovejetebus.pdfIn PDF document text
    • http://pospatrans.cz/UserFiles/File/81770245008.pdfIn PDF document text
    • http://berbun.com/user_img/file/53096944555.pdfIn PDF document text
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/16080cdaad0d6c---48620963771.pdfIn PDF document text
    • https://thejinglelab.com/wp-content/plugins/super-forms/uploads/php/files/kdqv6q7o6jrf6u6sf7vcuuprg7/85096514739.pdfIn PDF document text
    • https://sellerflows.com/wp-content/plugins/super-forms/uploads/php/files/f27363fe18a1ff5af64f467083e37b3e/32308665592.pdfIn PDF document text
    • http://www.corazondelsol.es/ckfinder/userfiles/files/xebukafebijawu.pdfIn PDF document text
    • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/604b50f62b5871db5889eddbe6959159/36358075665.pdfIn PDF document text
    • http://wenxuezj.com/images/File/fekesakafukuzi.pdfIn PDF document text
    • https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/h46nhslk3bevub43c5u1b41n0m/17174843392.pdfIn PDF document text
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/eg0ulaismveo0a0a45j6d7pnlm/88273430332.pdfIn 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://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_off00012478.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12478 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00013c8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C8A 17832 bytes
SHA-256: 8b20a79671fc75987f75d9063520c2d831f430f50e94f6ab653e6c618e6e68fa
font_02_sfnt_off00016b66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16B66 10748 bytes
SHA-256: 8a08f97a432aeb3f30b8ac8e50bd033ee2e5d68a93da9c3cd0f4822a3d1fbf5d