Malicious PDF — malware analysis report

Static analysis result for SHA-256 374a4f6f4b8246d0…

MALICIOUS

PDF

78.7 KB Created: 2021-06-09 14:54:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 1856504483d759f0315cb89fbf4aeec0 SHA-1: 193f90f8d57271481da0f10af64a3f2c508166f0 SHA-256: 374a4f6f4b8246d04a14e9c97847a3568100da6d08cf3952139b805d16d2073b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous links to external websites, many hosted on compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The document body, though partially corrupted, contains keywords like 'Alien covenant watch online 123movies' and 'wkhtmltopdf', indicating a lure to pirated content, likely to distribute malware or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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
  • 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 https://drafthe.ru/uplcv?utm_term=alien+covenant+watch+online+123movies PDF link annotation
    • https://borderpak.com/wp-content/plugins/super-forms/uploads/php/files/693be700c065ee5af00d582b50c918b2/lamudenela.pdfIn PDF document text
    • http://usaoxin.com/userfiles/2021-5/file/kazupuwerexotikelox.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/vb3pdreh8tdujcggpv4h1plg6v/fiwuxusuwonunuviwawox.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/a8793557f3f6c04c3dc52082b40cec56/mutom.pdfIn PDF document text
    • https://www.americansummercamps.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607785e910882---lavenok.pdfIn PDF document text
    • http://spoanalyze.com/wp-content/plugins/super-forms/uploads/php/files/f6baa73857261bf69ed2b0657999a80f/ketotujamijiwa.pdfIn PDF document text
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1608f53284b0dc---jepowomebuxifedowavelop.pdfIn PDF document text
    • http://gyobel.itpublic/file/17740186880.pdfIn PDF document text
    • https://theemperorsoldclothes.co.uk/wp-content/plugins/super-forms/uploads/php/files/cj3n4ashmnngrbd90fng80gb5b/xitibubufuzeximoxumute.pdfIn PDF document text
    • http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ae0cb4e46ad---tavivo.pdfIn PDF document text
    • https://c4ir.ae/wp-content/plugins/super-forms/uploads/php/files/n8lm4i6s73ri8jp0ntje3h4k06/56989097555.pdfIn PDF document text
    • http://reicar.dk/userfiles/file/xakidezogobuwixoteboje.pdfIn PDF document text
    • https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/8fd5e9fa87c41c36fad49233c7d23ada/sotapamabuzebobuvak.pdfIn PDF document text
    • https://www.enterpriselighting.com/wp-content/plugins/super-forms/uploads/php/files/f378921ee19e7ce318dcfa4052ad1432/vupatovovepobisamu.pdfIn PDF document text
    • http://securitydirect.it/wp-content/plugins/super-forms/uploads/php/files/44460bd736a1ec9700e724ee2b7a6b10/wutexozeduz.pdfIn PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/1606ed5bb3f7b6---wemodulinujo.pdfIn PDF document text
    • http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097a80f2edf8---78278628828.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE594 5220 bytes
SHA-256: 469a2e48be2dacd8ae23329458fbeded640783bc51a5155caf5fc025069fd3bc
font_01_sfnt_off0000f733.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF733 11260 bytes
SHA-256: 11fd7de058e28c099cae6a0a6b92d89d8d398d93e14e9655cb060f02cd9c09f6
font_02_sfnt_off00011da1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DA1 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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