Malicious PDF — malware analysis report

Static analysis result for SHA-256 46f0315063087ac0…

MALICIOUS

PDF

74.4 KB Created: 2021-07-04 01:00:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d0ead715ce9da0a1de14097d980b667b SHA-1: ddee407dd6622fcdef81ebaf016694be59feb3e9 SHA-256: 46f0315063087ac0be36c2acf5d228524074e448e1d0894b4e5f31d24d288bb4
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to compromised CMS upload directories or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

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=south+african+embassy+in+zimbabwe
    • http://yangpupark.com/uploadfile/files/bizarugogumexa.pdf
    • http://trustarshida.co/cache/fck_files/file/bejowituvelamonukob.pdf
    • https://www.eoluk.com/wp-content/plugins/super-forms/uploads/php/files/nfr520pv4qoi8giq1gn11al58d/46449876154.pdf
    • http://aksaaydinlatma.com/img/editor/image/file/35765134080.pdf
    • http://securitydirect.it/wp-content/plugins/super-forms/uploads/php/files/9247a583c02ee9c7d085731a66603952/nepep.pdf
    • http://radissonhoteltraining.com/userfiles/file/razuxufafikavofe.pdf
    • https://qualitylightsolutions.com/wp-content/plugins/super-forms/uploads/php/files/3217dcb7d6a0b992b95025cca922c59c/56826338742.pdf
    • https://belloverde.net/emailer/file/zilovux.pdf
    • https://vieclamxaydung24h.com/upload/files/39969617692.pdf
    • http://www.adanakursmerkezi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d88333e577f---keruxizizewa.pdf
    • http://jjmcp.jp/userfiles/Image/file/zofixojoli.pdf
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/d7c148nplh6dksmhf4m5196hu3/54531586959.pdf
    • https://useoneconvo.com/wp-content/plugins/super-forms/uploads/php/files/ca8f034b0c48f62525c200c90bea62ee/vomarivagekifiri.pdf
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ac50fec5db9---36544532174.pdf
    • https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/vargi7ra9knp1r9fkmjboidpk3/21172811749.pdf
    • http://bayzones.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/nibuwewoma.pdf
    • http://kuehllawpc.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/lozojolupux.pdf
    • http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd0f6446c4---nunolumajugogoxedoni.pdf
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160af95bdaac0d---6815339469.pdf
    • http://maszyny.pl/userfiles/file/23485840565.pdf
    • http://iamsoldierfit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a59e2229d01---vakikirumofezenodalafo.pdf
    • http://computergramm.com/userfiles/file/donuduw.pdf
    • http://remobudostol.pl/pliki/tezijotaladatari.pdf
    • https://apexforestservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160837e1678fe7---vefebegu.pdf
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085c326acbca---fegeluj.pdf
    • http://iberryhomemade.com/userfiles/files/681518703.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c05e.bin
7df3c88252194d6fba2876e7673b737986326cbc2eb5e0db57e4d935a6663ce2
pdf-font-stream PDF embedded font (sfnt) at offset 0xC05E 11132 bytes
font_01_sfnt_off0000da4e.bin
f61b567cc85102fe0d5300554e7599cdd7949b407664bec3cfcb0fb0fa98691b
pdf-font-stream PDF embedded font (sfnt) at offset 0xDA4E 16052 bytes
font_02_sfnt_off0001040d.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1040D 16792 bytes