Malicious PDF — malware analysis report

Static analysis result for SHA-256 69fb5c4d6982a964…

MALICIOUS

PDF

103.7 KB Created: 2021-06-29 09:34:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d5f33c87d7b931f5000327dd2fd6dcd8 SHA-1: 28f7bebeee91c2cc4822bcba5e08eb72c935583c SHA-256: 69fb5c4d6982a9641a1a1aaf58dee4a6ca5f0c815d36ec6abf9dfefce5220363
156 Risk Score

Malware Insights

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

The PDF contains a large number of links, many pointing to compromised WordPress upload directories and disposable hosting, indicating a link farm designed for phishing or malware distribution. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. No scripts were extracted, and the document body was unreadable, limiting the analysis of specific execution methods.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9682

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://dirabrealtors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fff56153fa---37970409163.pdf
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/160706a0d97cf1---35226998163.pdf
    • http://blog.crowdly.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607250534a52a---ribawava.pdf
    • https://iescolumbus.org/wp-content/plugins/super-forms/uploads/php/files/5d37e4c9fe1b5328e7428afa3482145f/61560101478.pdf
    • https://bevillelecomte.ovh/ckfinder/userfiles/files/mibufimuworeni.pdf
    • http://www.pianoszimmermann.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d2c397e07ec---74618450205.pdf
    • https://charqueadaboavista.com.br/wp-content/plugins/super-forms/uploads/php/files/f5193b09b05d954157cdd0e5fd158ebd/delobuvuwiduwawuxane.pdf
    • https://masterok-kovka.ru/wp-content/plugins/super-forms/uploads/php/files/82e0025b21a71fb317d5c9558f916093/suwowidamiwewizivopujape.pdf
    • https://banghenails.com/upload/file/zekovizitegajoninu.pdf
    • http://thegioituigiay.net/uploads/files/lalulurusomexe.pdf
    • http://chouchouphuquoc.net/upload/ck/files/26927908843.pdf
    • https://snabavto.com/wp-content/plugins/formcraft/file-upload/server/content/files/160787c96b6a37---birokolumawedopofe.pdf
    • http://legalinet.eu/userfiles/files/77158041838.pdf
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16070ae2f1cb4f---koxapopulebikinorisi.pdf
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/160863e1457573---zulaxerigatijuvulusurose.pdf
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160afdc924b4fc---wutagomonufivujanaj.pdf
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bdf89eb9b8a---77280328546.pdf
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/16070e823ce698---97458030481.pdf
    • https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/315773b20399327703dd316711b5443c/paruvadadafasebexitem.pdf
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607239f916880---newatoxipubasezatu.pdf
    • http://remaining-mc.de/userfiles/file/57362056319.pdf
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/dd509dde58bde99179e90567b74e3643/24353799648.pdf
    • https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/a657f6077136173cc616d3484e4ea326/tumava.pdf
    • https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/8v57da73fpsnpm4dlucnmd895v/gojatituravakuritoju.pdf
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/mf7rggmn6ilni8ss123hjt5cf2/49941377562.pdf
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160790903c8797---15657877400.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=you+deserve+it+meaning+in+tagalog
    • 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_off00011935.bin
f860e88ae9a9aae5300424d5de101b3d9acdd4b24b2519a471a090110b5761bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11935 16888 bytes
font_01_sfnt_off000130de.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x130DE 16792 bytes
font_02_sfnt_off000148f5.bin
a14b34ca52f061729a18c016eae7328c4a35de700fab7792430b9a9a49a59d87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x148F5 10740 bytes
font_03_sfnt_off00016167.bin
8862d811a3ac35a0b1009d4b6d3486cc702fd3e662f98d1625639967147d4c3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16167 18176 bytes

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