Malicious PDF — malware analysis report

Static analysis result for SHA-256 04ccca8408e44a99…

MALICIOUS

PDF

74.8 KB Created: 2021-03-12 10:55:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 31300eb74c9cd844e5d08ca52b50f5fd SHA-1: 40e2e9d4f438ca5750cfcb91711707a1a62dfeca SHA-256: 04ccca8408e44a99f65686a2b2d1e91604933b6dd2fdb9a2780bc6f6d2508a60
126 Risk Score

Malware Insights

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

The PDF contains an external URI that redirects to a suspicious domain, likely for phishing or malware distribution. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document is designed to host multiple links on disposable domains, further supporting a malicious intent. Although no scripts were extracted, the overall structure and URL suggest a phishing or malicious content delivery attempt.

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://soxebez.ru/award?keyword=digestion+quimica+en+el+estomago+pdf PDF link annotation
    • https://cdn.sqhk.co/tamupoto/jMVfjb7/parkour_flight_2_apk_free_download.pdfIn PDF document text
    • http://fisareboveda.getenjoyment.net/90662510306.pdfIn PDF document text
    • http://relax35.ru/material_safety_data_sheet_format3oicj.pdfIn PDF document text
    • https://cdn.sqhk.co/titesojijuko/dmkVhh2/zigunimaxisexube.pdfIn PDF document text
    • https://cdn.sqhk.co/muwazubivotu/tja2hi5/70001330704.pdfIn PDF document text
    • http://birebap.scienceontheweb.net/bamiwir.pdfIn PDF document text
    • http://trylait.pro/11342732898q02oa.pdfIn PDF document text
    • https://cdn.sqhk.co/zibumimuw/IajbPYh/24605409096.pdfIn PDF document text
    • http://homearfes.com/what_is_public_administration_by_different_scholarssau67.pdfIn PDF document text
    • http://reduslim-official.website/descargar_bluetooth_para_android3xvlb.pdfIn PDF document text
    • https://cdn.sqhk.co/wukomidekepu/dibPjeW/41958580598.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sodowurivav.onlinewebshop.net/john_deere_tractor_parts_for_sale_in_india.pdfIn PDF document text
    • http://biwisuzasasare.rf.gd/catalyst_9300_configuration_guide_16._10.pdfIn PDF document text
    • http://vubelifijam.atwebpages.com/how_to_calculate_for_half_life.pdfIn PDF document text
    • http://mewexam.epizy.com/gotavuguzivo.pdfIn PDF document text
    • http://rofatumetewebil.epizy.com/nkjv_bible_app_for_iphone.pdfIn PDF document text
    • http://jemekovivokuvup.epizy.com/what_is_the_purpose_of_philosophy.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_off0000e614.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE614 5504 bytes
SHA-256: 2d91356413e844222076ec7f4af8895ab527c89bf5d9d6e29504b13bee5b0472
font_01_sfnt_off0000f8bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8BF 11588 bytes
SHA-256: 3ed97f73f43253b4a228476c1c00e38bace5a3de42cd7df36bdd71c2d6fdc726

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