Malicious PDF — malware analysis report

Static analysis result for SHA-256 96e9a430a16c3975…

MALICIOUS

PDF

94.8 KB Created: 2021-07-05 02:15:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 4d382b48fe51500ee266d1da5dbf5cfc SHA-1: 58c547081b67dfc4fb07953e3139bfadc7885e43 SHA-256: 96e9a430a16c39755f7e3bffe992aea17442d746de0aeb2ed498f06937c68325
156 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many pointing to compromised CMS upload directories, suggesting it's designed to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware delivery. No scripts were extracted, but the heuristic findings point to a link farm attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9927

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://micsys.in/userfiles/file/tesopulikasadexotak.pdf
    • https://www.synergyheart2heart.team/wp-content/plugins/super-forms/uploads/php/files/684pc9c725kmutkd1vbmu1j1rl/5585293589.pdf
    • http://samtekelektrik.com/files/rirebis.pdf
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/e863a9354754a08bafbca500126bb384/tadowodused.pdf
    • https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/80bd30d848d77fe87d397764cd3bc73b/15759799227.pdf
    • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/ba3980d5110b94031a78f3a9b6f85730/dajudabarudekuturelarijum.pdf
    • http://grani-tonkogo-mira.ru/wp-content/plugins/super-forms/uploads/php/files/0ff9cabc5459aa7c3003c525c41c255e/fozesegig.pdf
    • http://cementfeet.com/userfiles/file/41886322497.pdf
    • https://www.alongsideasia.com/wp-content/plugins/super-forms/uploads/php/files/cb1bd6dd0d9b3a0b72b57ebaa1ba7896/nidafegop.pdf
    • https://www.heainc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd7a0a39112---71831229473.pdf
    • https://otelnamore.com/wp-content/plugins/super-forms/uploads/php/files/869e5e413bc3cb1b67fe47b22125f9ad/fatupoxigirexamaxew.pdf
    • https://www.lesson-online.org/wp-content/plugins/super-forms/uploads/php/files/f9puc3u2lvoelqo20099hc7nk6/20177201762.pdf
    • http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607298650ea79---mefukatixod.pdf
    • https://svingenieria.cl/userfiles/file/wumeredamus.pdf
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a0ec75cdbb---buzokobuk.pdf
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073de7bd2e07---1692435299.pdf
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/26611d2cdd25eceae5f472f67ce5dbb3/18280084931.pdf
    • https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/c5c32a397770872e814123d8f9a954ae/74936431363.pdf
    • https://alkalacarservice.com/public_html/userfiles/file/totatu.pdf
    • https://funkydrop.shop/wp-content/plugins/super-forms/uploads/php/files/bd87d676169ba0bc63ba6c19315362b4/kobuz.pdf
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608140719367a---70065601226.pdf
    • http://cn-junsheng.com/upload/file///2021629105516266.pdf
    • https://harkakotony.hu/UserFiles/file/doxizifu.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=luka+doncic+threes
    • 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_off0000f7c7.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C7 16792 bytes
font_01_sfnt_off00010fd9.bin
8101fff7d935e6ffaf550399ba7b664638d650b6f00f68d8e2fc925dc97e5cc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FD9 18108 bytes
font_02_sfnt_off00013f70.bin
04e06af2f09be62898b4b4750351a6efe363bcfaac073bab9c026aa7d6873ece		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13F70 10572 bytes
font_03_sfnt_off00015781.bin
47e9ba40d78eab6fc75f0484694c3b06904ff1b04431f707d7648ded4d60e26d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15781 16348 bytes

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