Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fc94ba2be89cb67…

MALICIOUS

PDF

88.7 KB Created: 2021-07-30 21:19:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 681ae19d0338a8cbf98fe5e8bbd66566 SHA-1: 41204040f295fea7e25ac926368ccdb814a5d139 SHA-256: 1fc94ba2be89cb6771a14990c6a0c2b4ccedbe453c6a8a8e50fa31a260e07ec0
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a significant number of external links, many pointing to compromised WordPress sites. These links likely serve as a lure to download further malicious content, as indicated by the ClamAV detection of 'Pdf.Phishing.Trojan'. The embedded JavaScript is likely used to facilitate the redirection or download process.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4368

Heuristics 6

  • 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.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://nhasachconggiao.com/luutru/files/papajowev.pdf
    • http://coral-travel66.ru/admin/ckfinder/userfiles/files/71777295413.pdf
    • http://babywagen24.de/userfiles/file/tivin.pdf
    • https://medius.sk/userfiles/file/76147733020.pdf
    • http://halmar.info/userfiles/file/denowutorufigagorer.pdf
    • https://castel.ro/userfiles/file/285761300.pdf
    • http://math-talk.kr/wp-content/plugins/super-forms/uploads/php/files/r9m00678i6nu9rjnbthivk66t7/74219625223.pdf
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/9fk6trausif0vbk22eu3e1bgqa/14673765918.pdf
    • http://docando.es/js/ckfinder/userfiles/files/pijiguduxomirafi.pdf
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/a3507f86d3bf06c1d38d010bad542b79/raxazerawi.pdf
    • https://heritagecambodiatravel.com/userfiles/file/vedisuxosegubesumitakuz.pdf
    • http://homeopathyhongkong.cn/files/rigukufemofumufatawus.pdf
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e36aed47cc5---95595189168.pdf
    • http://southportrubbish.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607173453062b---melelivefajuje.pdf
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/sjbsl57in0s1mlddbtv66vrb3u/sowetisusaxala.pdf
    • http://www.xpresswedding.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c90efa1c29---jufavopalugilaxewuk.pdf
    • https://www.ltgpartners.com/wp-content/plugins/super-forms/uploads/php/files/0e3f66081aa72f12c251215b0c867890/nonokub.pdf
    • http://willtorock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8454e27ce6---fesiwezoda.pdf
    • http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d29659fcf1---63021202690.pdf
    • http://nmglyxx.com/userfiles/file/33898167465.pdf
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097817e5428e---86556254213.pdf
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/46ba47337df0789778068195b0d71426/92928509563.pdf
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/8umn8gtl0ch4krm8alpp18n4do/zazixowobatiziruvuj.pdf
    • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1606fdb7584835---71895431590.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=download+obb+patch+pes+2020+android+terbaru+ps4
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000107a3.bin
c8611474a38c2b50caa826397c8d84d83b15462f786d872748a88be98518a6cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x107A3 20412 bytes
font_01_sfnt_off00013c77.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13C77 16792 bytes

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