Malicious PDF — malware analysis report

Static analysis result for SHA-256 0aeac348e4588009…

MALICIOUS

PDF

74.5 KB Created: 2021-06-10 05:28:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: e06a502cea9ca1fb3332422e5f70fa21 SHA-1: f0c4efcef86f804f7a88861eb6e61e128ab79db4 SHA-256: 0aeac348e45880098d5da1c5609163685a43e64f744cf5e050765feb5d7c05eb
156 Risk Score

Malware Insights

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

This PDF file contains numerous links to external websites, many of which are hosted on compromised WordPress sites. The document body, though heavily obfuscated, suggests a lure related to 'Shadow fight 2 mod apk', indicating a phishing or malware distribution attempt. The presence of multiple external URIs and the ML classifier's high confidence score strongly suggest malicious intent.

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://laborke.ru/uplcv?utm_term=shadow+fight+2+99+max+level+mod+apk PDF link annotation
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/3661a58746d3bc1901502f7e714938ff/zusisawudenakijeraruviven.pdfIn PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a132f4d79eb---popepo.pdfIn PDF document text
    • http://prttour.ca/FileData/ckfinder/files/20210603_406EAAF16DB48EF7.pdfIn PDF document text
    • https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/1sik7gvbououv1eh7vvbmcepkl/39133200440.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160861d3775e1f---97952535586.pdfIn PDF document text
    • https://amitadevnani.com/userfiles/file/90592947160.pdfIn PDF document text
    • https://humanistbeauty.com/wp-content/plugins/super-forms/uploads/php/files/6fnmun7ksdqkiq19dmhqvp2p5u/mopixotazesokoxitazefoja.pdfIn PDF document text
    • http://saokienviet.com/uploads/image/files/verilapexodumetudonasoj.pdfIn PDF document text
    • http://rollfactorytogo.com/uploads/files/mexifatitediz.pdfIn PDF document text
    • http://www.atrium-tuiles.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae8b99a10df---zogupewojabudizoteju.pdfIn PDF document text
    • https://eyetracking.pl/userfiles/file/ranejefawagidogefazoj.pdfIn PDF document text
    • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a25f9e1cac7---nubezoxedidi.pdfIn PDF document text
    • http://hoondb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608559f83cd65---57301986942.pdfIn PDF document text
    • https://visaonline-vn.com/wp-content/plugins/super-forms/uploads/php/files/osomphmd2ev7ftjp56ll2v6j7i/wusanon.pdfIn PDF document text
    • http://retroldn.com/userfiles/file/lopakekenoge.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E5 5856 bytes
SHA-256: a1381d88673727e2d6237b4d652f21da29cac4424d4228dbbd02c59311cd2521
font_01_sfnt_off0000fada.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFADA 9976 bytes
SHA-256: 3f7b096d955035155ca3b05ca11d5d4400711095c31380c29dbf24ccd44ee526

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