Malicious PDF — malware analysis report

Static analysis result for SHA-256 e790ede9277145a3…

MALICIOUS

PDF

78.1 KB Created: 2021-04-07 09:18:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 57cff307fa5d0985b225c321d18bb34a SHA-1: 0439d461e30cc5f8abbfa330c4017530111b94f4 SHA-256: e790ede9277145a344e4cac8f08b8b5b18b47bdf65e2f1d707664660092183fe
126 Risk Score

Malware Insights

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

The PDF contains embedded URLs and is flagged by ClamAV as Pdf.Phishing.Trojan. The ML classifier also strongly indicates maliciousness. The presence of multiple external URIs and link farm heuristics suggests an attempt to redirect users to malicious content, likely a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://soxebez.ru/123?utm_term=aia+dental+claim+form+hong+kong PDF link annotation
    • https://cdn.sqhk.co/kufomopinu/jabjfSC/nonazubogenilejuxufevof.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465703/normal_603c2262d70ec.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/8ac3hcp/mowabubefuse.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374953/normal_600c8a48674b5.pdfIn PDF document text
    • http://nigamenivikuki.iblogger.org/66331464916.pdfIn PDF document text
    • http://duwefazef.22web.org/57429851099.pdfIn PDF document text
    • http://fasusugexewi.22web.org/samsung_a10e_price_in_india.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479938/normal_5fe7767df03a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479214/normal_606b802e986c3.pdfIn PDF document text
    • https://cdn.sqhk.co/dejuxafe/doiimjg/neretidibibagutakupome.pdfIn PDF document text
    • http://lovepositions.info/48583584338asucf.pdfIn PDF document text
    • http://gebuzof.22web.org/18264453281.pdfIn PDF document text
    • https://cdn.sqhk.co/pevotido/jQ4GAge/balt_ravens_injury_report.pdfIn PDF document text
    • http://digitaloffice24.ru/how_to_empty_mistral_evaporative_coolerkr3bn.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gezogiz.epizy.com/65555596250.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b9ea44f-9b3d-4975-90eb-986b023b5e12/misabe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4164012f-70e5-42f8-9804-ad6af1d7ae82/what_does_psalm_23_verse_6_mean.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77b943b6-c7e0-4b09-a7e6-1b149bc151d2/kenmore_front_load_washer_repair_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0257e283-b45b-42a2-8724-4151935b3a5a/lijidatipefo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6236067-7c41-410e-b85f-003f8fc3bcc7/hp_8600_plus_ink_cartridges.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1cb20267-ae1c-4169-80ce-3d97f6508211/poem_of_the_man_god.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/528d565f-418a-45af-b04e-2b4e218f1521/xusatobe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e55a3b47-dc55-4d40-ba95-e63d8d804717/letra_del_himno_nacional_mexicano_en_otomi_y_espaol_completo.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_off0000f429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF429 5312 bytes
SHA-256: e767306ba57bfc36d271ecda6521013fc20fb134a9f827d2602d214bd14ee60a
font_01_sfnt_off0001060f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1060F 10852 bytes
SHA-256: 028893bed4af51bacefffb0c818559178178ae247e60a88d2a7065bfdeaebcc6

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