Malicious PDF — malware analysis report

Static analysis result for SHA-256 06c29cb21a8c930d…

MALICIOUS

PDF

64.9 KB Created: 2021-06-24 12:48:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: a60e6bc56cc9889e27b7e41f39b354ff SHA-1: 7aa55cc1ecbd6a41b008883306387cbcac371a9f SHA-256: 06c29cb21a8c930d40c85c920241250aede50bfbc73487e564d5c2a725919038
154 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, containing numerous URLs that point to files hosted on compromised WordPress sites, suggesting an attempt to lure users to malicious content. The presence of multiple links on potentially compromised infrastructure indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8681

Heuristics 5

  • 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
  • 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://www.circoloaletrium.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a7fc69623c8---nixaremutu.pdf In PDF document text
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/am479uq5p78gfarigpepm8iubj/17520188391.pdfIn PDF document text
    • https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/8c89ea2d88d11f2471ef7edbf6cde284/zibidezedotid.pdfIn PDF document text
    • https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/9b8f06b0a733cc1de7a2630d3ac7954a/naviv.pdfIn PDF document text
    • http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160884405f2cae---26853995279.pdfIn PDF document text
    • https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/2d2edf4ac0ee45a5ca6fe33baf845c6b/muridonik.pdfIn PDF document text
    • http://adams-gold.ru/archive/image/file/66727678283.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607f2c915033f---veteretofafota.pdfIn PDF document text
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/6c70e164589540cc8b3b0f22e9762f44/62835308181.pdfIn PDF document text
    • http://nct-vn.com/userfiles/file/fewawonapapebivejepubi.pdfIn PDF document text
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/v69l8hdr92f0711d0qho1ecdjl/4605351326.pdfIn PDF document text
    • http://atlantichomeportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d255de2389---vikatibinas.pdfIn PDF document text
    • https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/160961720d2b03---5496456079.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/9hri3c3lnr5r9mdir1gn9ch7s5/limukabadekifuv.pdfIn PDF document text
    • http://deltastal.ru/userfiles/file/nodizip.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1606d501c5f309---75621168516.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=basic+apprenticeship+contract+templatePDF link annotation
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF4D 5224 bytes
SHA-256: 38367f1ea70e6cbd6926eafc6a82966b568ad0732807a137a4a342cbccf9aaac

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