Malicious PDF — malware analysis report

Static analysis result for SHA-256 34fd180b4879b4db…

MALICIOUS

PDF

79.8 KB Created: 2021-05-01 15:54:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 857ffb18f16d45f3b51959b905ca2344 SHA-1: cc49be2fd4efcac0c66616312263a43d6ecbd895 SHA-256: 34fd180b4879b4db9c4918ef0218d0f1f429cb6a8c8c216e060dfc090f9a6f5f
154 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to various websites, many of which appear to be compromised WordPress installations. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or distributing further malware. The structure suggests a link farm designed to obscure the ultimate destination or to leverage compromised sites for hosting malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9102

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.
  • 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
  • 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://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160886ed05a79a---nopetaxe.pdf
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/o2cc71g5mhrlklhdsrbkgn54qc/1673240222.pdf
    • https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/16070e291823dc---rimosomufeg.pdf
    • https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/8dd414e01f518f8f1769175faac85caf/76063708886.pdf
    • http://www.melloecastro.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f4d66bbe6c---96861707126.pdf
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d379b7cc98---kepalo.pdf
    • https://www.napariverinn.com/wp-content/plugins/super-forms/uploads/php/files/c897ee7fb7d23d803c25e6ca7f9e72c6/vixotexo.pdf
    • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/scc8ab9mlvq2d8odemk5nctjfo/62364694601.pdf
    • https://genesislighting.net/wp-content/plugins/super-forms/uploads/php/files/92b2f99bda53a04bd94220872a88cf47/bevixifab.pdf
    • https://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070ee33ac14b---40669336372.pdf
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1607e09159213d---tibitituzek.pdf
    • https://www.nosolodespedidas.es/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9099ecdff---wirepelidi.pdf
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/160831659d5922---fapemirujojezefi.pdf
    • https://flycam.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16079018f8cfe5---17866058281.pdf
    • http://www.photobreak.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16088787450df1---pojoviwu.pdf
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ca16f6b260---52741349178.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=best+songs.+pk+apkpure
    • http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df3a.bin
627e6d375f92fa7fb8e4889f1cff82bbe98accc4fb1b0ee17c90c6c825924ccc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF3A 4452 bytes
font_01_sfnt_off0000ef03.bin
8cacd4392ac3cb737ba676c69f111039cb4a4cca51827c2ba55c123850dfa752		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF03 5100 bytes
font_02_sfnt_off00010072.bin
a1c68180eae955d710b1f59d89b7b5bb1f22246194deffa7b9c3298859733f9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10072 2140 bytes
font_03_sfnt_off00010a4a.bin
dcc6b27b942ed360c7d285f1cd646d705f96711c338e1b6fb8124ff61b1c970a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A4A 12032 bytes

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