Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8dd96be2b9d17b8…

MALICIOUS

PDF

124.4 KB Created: 2021-02-28 14:13:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 37846a80b887a163dd710e1fb19a87f0 SHA-1: 1cf3c1601bb6d22c1fda9274d151cdccc61ac4ec SHA-256: c8dd96be2b9d17b8404f552289b8ed78f99b7697e381fd0e1011729e29d4b73a
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URIs, including a link farm on disposable hosting, suggesting it's designed to redirect users to potentially harmful websites. The document body, though partially obfuscated, appears to be a lure related to a search query, further supporting a phishing or redirection attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://druttle.ru/award?keyword=what+is+the+summary+of+beowulf PDF link annotation
    • http://jaxagogilexet.sportsontheweb.net/how_to_get_nfl_sunday_ticket_for_free_on_roku.pdfIn PDF document text
    • https://cdn.sqhk.co/jabakujivim/gciinje/billie_eilish_xanny_lyrics_deutsch.pdfIn PDF document text
    • https://cdn.sqhk.co/kalusoxat/KE8cib3/highway_to_hell_tab.pdfIn PDF document text
    • http://wonnaturila.space/75136873066sxpk6.pdfIn PDF document text
    • http://aov.one/lose_stomach_fat_in_two_weeksemlo2.pdfIn PDF document text
    • https://cdn.sqhk.co/simunenij/Wjfjgjh/business_plan_sample_kenya.pdfIn PDF document text
    • http://replyua.site/mipopowigapabici7j7.pdfIn PDF document text
    • http://wemuwetafivaxe.sportsontheweb.net/multinomial_logistic_regression_spss_youtube.pdfIn PDF document text
    • https://gipazekafasulal.weebly.com/uploads/1/3/4/6/134600210/durazodudoli.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://namakanexir.atwebpages.com/53269716882.pdfIn PDF document text
    • http://pujumek.myartsonline.com/bavopulavakan.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/lexical_analysis_notes.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_off0001aa57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AA57 5356 bytes
SHA-256: 6cef3256afde765eb0d42fa6c8135b52b333f28057fc335514e0f52627905626
font_01_sfnt_off0001bc81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BC81 12084 bytes
SHA-256: 6413fc87af76881ddf6b68f458d33c9cf9f00f9940541dbbbbf81957515855d0

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