Malicious PDF — malware analysis report

Static analysis result for SHA-256 01199327c73df53a…

MALICIOUS

PDF

75.5 KB Created: 2021-02-17 20:53:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 1cab5bfb23447cea06d0bfd9da311469 SHA-1: fceb3356156717402dd402101d949039aa9eabde SHA-256: 01199327c73df53afb8325f262c351485e67adbfdcf2e8c951ec9a199e26ff3f
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one heuristic identifying it as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The presence of embedded URLs suggests an attempt to redirect the user to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://leonvi.ru/wix?keyword=motorola+h500+manuale+italiano PDF link annotation
    • https://cdn.sqhk.co/nedabuke/7ajbvmy/40766771447.pdfIn PDF document text
    • http://differencecheats.net/84091247103ltc5f.pdfIn PDF document text
    • https://sexuviruzimi.weebly.com/uploads/1/3/2/8/132814305/8049466.pdfIn PDF document text
    • http://eslife.pro/sujazutud1136x.pdfIn PDF document text
    • http://klyshsheff.xyz/lenojowirunemiweweboroa5kfl.pdfIn PDF document text
    • https://cdn.sqhk.co/futogifoku/iPdBAt5/4412454091.pdfIn PDF document text
    • http://gulibej.22web.org/lurarisujemodurejej.pdfIn PDF document text
    • https://repiwolaz.weebly.com/uploads/1/3/1/3/131381539/579c4e4bf85.pdfIn PDF document text
    • http://riforemepenog.iblogger.org/sri_devi_bhagavatam_in_telugu.pdfIn PDF document text
    • http://shtampshop.ru/121518142779409o.pdfIn PDF document text
    • http://snatural.space/metodo_para_trombon_de_vara_gratisv1p4r.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fusifovizit.rf.gd/rajilot.pdfIn PDF document text
    • http://xukenefurirog.epizy.com/printable_coloring_sheets_halloween.pdfIn 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_off0000eae4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE4 5016 bytes
SHA-256: 43730cb19060ae36112eb5c8829f1bfe12213aef56f5cd3613f7a28ba5cd9b41
font_01_sfnt_off0000fbd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBD0 10984 bytes
SHA-256: 34cf1e35c5b77aa37e608d8ab900c12135359efc3f2e6c46f94a0a315e78f46d

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