Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab600f2d6a7f6723…

MALICIOUS

PDF

87.6 KB Created: 2021-07-08 09:10:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1d92c6f1037c7edea8e2e86a2add174e SHA-1: 44b561d9b4412bf2ca66ffdfaf7b79d5841eceb4 SHA-256: ab600f2d6a7f6723d33666314fdb0e8259f9f3468a07e911b5312636153732a9
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file contains numerous links, many of which point to compromised websites or disposable hosting, indicating a phishing or malicious redirection attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to lure users to malicious content or exploit kits. No scripts were extracted, and the document body was unreadable binary data.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/1t014gsvl5v0d8gcuq00m72v3k/20289791427.pdf
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/1609272586400a---fupinokune.pdf
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160757a7f373c9---xobomax.pdf
    • https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/2e76f6c841679cd02c53e60a08451235/16265832086.pdf
    • https://weblative.com/wp-content/plugins/super-forms/uploads/php/files/52rpopik3k43kcomnshlupf918/30257041973.pdf
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e59d361147---ritulowaberetevaris.pdf
    • http://a-swiss.com/upload/userfiles/file/doxateviranokazu.pdf
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16073161582d8c---xufipazelilax.pdf
    • https://ikincielinmak.com/upload/ckfinder/files/72594490347.pdf
    • https://grup-insaat.com/userfiles/file/16849151337.pdf
    • https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/gt5f3vi9i192g98b9r08birmrh/bugeredoratapodeveforep.pdf
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/1609d68b029ed2---wufesefuxegozib.pdf
    • http://triatlonbizuterie.cz/sites/default/files/file/88085484640.pdf
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/1ad844b063e58c51ead4d62175d4ff29/38722619795.pdf
    • http://gerocuki.hu/user/file/wirunafemulitinam.pdf
    • http://www.unidacardoso.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16079b464e3d33---83974286696.pdf
    • https://zoomkish.com/basefile/zoomkishcom/files/korudutob.pdf
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/jeb76k0o3qs9frrir404cdmvf4/dareturek.pdf
    • http://mynigaoe.com/upload/file/20210510165008.pdf
    • http://ansing.nl/userfiles/file/77449324240.pdf
    • https://unserbiokorb.ch/userfiles/file/42710477527.pdf
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16095e4efdeea5---26572089737.pdf
    • https://realschoolspirit.net/scauserfiles/files/6805791432.pdf
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16095fdd6dbd27---dorezutaka.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=how+to+delete+a+page+in+goodnotes+on+ipad
    • 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_off0000f316.bin
50cf9e0f5659a77b3dee3e13f439baa124aa99662e849b604c5f77c2b613be2b
pdf-font-stream PDF embedded font (sfnt) at offset 0xF316 16912 bytes
font_01_sfnt_off00011efa.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11EFA 16792 bytes
font_02_sfnt_off00013711.bin
8443fe9f8f147f69bed029036a598c1e9e04c162669c09f6a55d098f7a864abe
pdf-font-stream PDF embedded font (sfnt) at offset 0x13711 10544 bytes