Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fbb71f0c5a148b6…

MALICIOUS

PDF

64.0 KB Created: 2021-05-01 15:12:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07aa5c1bb6aaf3f62120f3a7c725f64a SHA-1: 2e88318fe59121a0d7b3bfd91a0d98de56008784 SHA-256: 6fbb71f0c5a148b659297a5e044af71532799a5d4277e380d4f0b347ad6872d7
154 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to multiple compromised WordPress sites, a common tactic for distributing phishing content or malware. ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. The ML classifier also flagged this PDF with a high probability of being malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8201

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://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/16071616c3091b---liwisabapigodapakidak.pdf
    • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/d6fe80a82f6adb7f24cb31da9eec6236/90982577180.pdf
    • https://maxim-catering.de/wp-content/plugins/super-forms/uploads/php/files/veutvffl8ad2objkenhe10grou/80018929501.pdf
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/16077ecef2e991---mefogeganur.pdf
    • https://lea-inc.com/wp-content/plugins/super-forms/uploads/php/files/e2756f3070a9bc4a2335507c62204ae3/40593261585.pdf
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/17a48a3529384e4b32428fc81d359b1d/dibukepofogodopawomuti.pdf
    • https://hfdjet.com/wp-content/plugins/super-forms/uploads/php/files/7bc97a528cd3910f35c0950236fca96e/69427098763.pdf
    • http://kystop.com/wp-content/plugins/super-forms/uploads/php/files/goatkr4ghircnluem59r3ih4b6/ruxukop.pdf
    • https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/8d73f4c5a9445666af4e64775f121914/61414246686.pdf
    • http://www.hkqi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072b4fc06ddf---70599006089.pdf
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d4012da75a---vezefavululom.pdf
    • https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160853acb70346---kimawa.pdf
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a650cddd1c---56487714272.pdf
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/0k6qdbl7f9blkb80nmucjgeph4/7153587175.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=asiana+214+crash+report
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db0b.bin
d051656a0eace357401f87f2bd626aa5b6704fdf4abc21203f63968b33a40f7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB0B 5248 bytes

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