Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dcc05a2beef68af…

MALICIOUS

PDF

116.9 KB Created: 2021-07-03 10:43:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: e4a1674376e9b2077f5af55db919170a SHA-1: 327f3ca923c70380204483836889afa5dff41538 SHA-256: 8dcc05a2beef68af7380675ec609861cefae0954c39de1b8e99798863d34e130
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress uploads, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are consistent with a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9883

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.
  • 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 http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609d11bc73087---zusubotikerekepoxopunene.pdf
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/3rlovdol0n4vbd6ern3sv9m4h6/narebepufaveleporubug.pdf
    • http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16072e7ae4cc96---wivojesibo.pdf
    • http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160796c42d0207---jiloborovamezewibubo.pdf
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/8885b332ee7c02793d293420b668b650/kotirosuv.pdf
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/160795d1d24cc8---vojimuzuminugodunabixajib.pdf
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b54ee4e8f29---roreba.pdf
    • https://loan-financial.com/wp-content/plugins/super-forms/uploads/php/files/5da10d8ed1ba551c4cc391bc4865c76c/95988193603.pdf
    • http://golden-candies.ru/webroot/files/files/zodetogulo.pdf
    • http://reanda.com/jingkelun/userfiles/files/20210619211405.pdf
    • https://tourpon.kr/FileData/ckfinder/files/20210616_21C053EBD546622E.pdf
    • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/ro5ba53sk0kq3f2mqrf76da3aa/jitakilir.pdf
    • https://ka-base.no/images_content/file/64049748989.pdf
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8a3a55eb61---74832799117.pdf
    • https://www.hdcorp.com.br/wp-content/plugins/super-forms/uploads/php/files/606afe53qpd7jebr5ijqhfrlue/24386252285.pdf
    • http://bracyfamilyreunion.com/clients/c/c2/c2db1a97f769835965582c74015c7782/File/vorilopog.pdf
    • http://driver-jazda.pl/upload/file/lidovilisevirogakaxijo.pdf
    • https://www.servicioscalibrados.com/wp-content/plugins/super-forms/uploads/php/files/93bc92b365e23f71ae68420c65a0785d/69834129417.pdf
    • http://momsystem.ru/public/file/sulezomijavafazipujurofi.pdf
    • https://iveducentar.com/uploads/assets/file/58491288970.pdf
    • https://tlpnw.com/wp-content/plugins/super-forms/uploads/php/files/85b7461fabf882088362552e925b3413/sowajivuwaberamaba.pdf
    • http://gramercy-grand.ru/files/file/weridavove.pdf
    • https://interesttour.com/wp-content/plugins/super-forms/uploads/php/files/2587f9be1c8325abb84155d419fd7bd8/vekelunaravi.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=smooth+slow+motion+after+effects
    • 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_off00013a65.bin
9b6b2578e01c01d138b6ca5ac7fdd1f54d7580e93f5d8459671f30ab54fa24ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13A65 18884 bytes
font_01_sfnt_off0001578f.bin
ef4bba8773fcfc4ce6db7dde540ad6985562520603de07ce5cfe62a117a7bea3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1578F 26176 bytes
font_02_sfnt_off00019382.bin
3059156b7a4068b094b10573b765e25ba382b61f9b428f68c542f36133b66be3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19382 10760 bytes
font_03_sfnt_off0001ac1a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1AC1A 16792 bytes

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