Malicious PDF — malware analysis report

Static analysis result for SHA-256 e74008e6c1144dc6…

MALICIOUS

PDF

269.7 KB Created: 2021-06-29 23:19:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b30a77a57246efa762b4fcd775249aaa SHA-1: 528238767762757e6242565f119b57a6c2f4ae23 SHA-256: e74008e6c1144dc696ecc0aa085dba0c743ce3f17a4426aaff7d8c622330b7fa
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to compromised WordPress sites, identified by the 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristic. The ML classifier and ClamAV also flagged this PDF as malicious, specifically as a phishing trojan. While no scripts were directly extracted, the embedded URLs suggest the document is designed to redirect users to malicious content, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9906

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://247christianity.org/fckeditor/userfiles/file/435582948911621058075.pdf
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/68e072e8decc5a43b847408e617f8bb7/wosigapesubavarifos.pdf
    • http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f03340b469---pifugagusovuduwivevix.pdf
    • https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/1170a1d4978c3e82301c0a8d35fa2cab/jokimokoxerovux.pdf
    • http://mineraux-et-lithotherapie.fr/ckeditor/upload/files/15218601041.pdf
    • https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/9f5c5d69bc50d5071f053329837fa8b8/72515047291.pdf
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606efa171939f---goruwididakosetava.pdf
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079bf59caa07---mojixiposerujunep.pdf
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ffdf0dc80d---xawiputodexokakiwimuwem.pdf
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/471e5ddcf9b2b7a3beb6c84f5a1a9c66/rulilimevibun.pdf
    • http://dodici12.ru/wp-content/plugins/super-forms/uploads/php/files/gc53qunhr9dtmpl87mq1drcuq2/davugonitapowufu.pdf
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/abf52a2d5178ffe88ef17881110de43b/fizegaviduzapiba.pdf
    • https://nhachoxebus.com/upload/fck/file/vivigedemogifukekodifu.pdf
    • https://oteaexpert.fr/cite_imgs/file/98531517899.pdf
    • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16082578d29c44---83938407868.pdf
    • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/9fc4d077b79f863367ca9baf671f03af/89349458225.pdf
    • https://saleskerala.com/ckfinder/userfiles/files/malomoxubefigafosijamatuv.pdf
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607a7b9f3edaf---gudoluxaxagunakixixu.pdf
    • http://perles-del-beya.com/userfiles/file/7632940532.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=smart+rice+cooker+price+in+nepal
    • https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/e2c46d31ef8dff0b6ff9a5bb13935d05/medojufegitisixifulot.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_008_off00040dad.bin
e81d3a701b59a2743ec75d0340bcf2deff8df18eb9929fb0516696569d8e468b
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x40DAD 17460 bytes
font_00_sfnt_off000351d0.bin
49fe560519daac7ae638f9387250601b81a6c6866d3d0c036bbc80a0c302054a
pdf-font-stream PDF embedded font (sfnt) at offset 0x351D0 10532 bytes
font_01_sfnt_off000369bf.bin
912b81bc0412d0262a25c8700c59c5b252aab0437a51f41fba5ccef243c7e2e0
pdf-font-stream PDF embedded font (sfnt) at offset 0x369BF 19772 bytes
font_02_sfnt_off00039c8d.bin
2417c5c9db0c013e4f7fcd7906523355e41dad00dc5133f3f2aa90df63a5a4d6
pdf-font-stream PDF embedded font (sfnt) at offset 0x39C8D 33348 bytes
font_03_sfnt_off0003f59c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x3F59C 16792 bytes