Malicious PDF — malware analysis report

Static analysis result for SHA-256 242eb0fbf7632ae9…

MALICIOUS

PDF

72.9 KB Created: 2021-01-25 08:26:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 27660fc61b16e95822c424d24fe377a9 SHA-1: c45b8f77c916db47fd3a9463e4c74fcc2e73caee SHA-256: 242eb0fbf7632ae92a34b612c7ce44e9fd6a4344da28207c4646e776b592afa1
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable domains and are structured as a link farm, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of external URIs and a link farm heuristic further supports the conclusion that this document is designed to redirect users to malicious content.

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://seumenha.ru/123?utm_term=bdo+asula+necklace+tri PDF link annotation
    • http://idealsit.fun/wamisojudoloxukufa3ul.pdfIn PDF document text
    • http://juwolopuga.66ghz.com/1805784003.pdfIn PDF document text
    • http://uber-global.com/carnivores_dinosaur_hunter_hd_download_pc6cy4y.pdfIn PDF document text
    • http://vaxuzorokolate.iblogger.org/senulewe.pdfIn PDF document text
    • http://electorat.org/21931396245t4fam.pdfIn PDF document text
    • https://cdn.sqhk.co/muwizavo/4cheDYz/cooking_ice_cream_base.pdfIn PDF document text
    • http://psychologyrelax.xyz/download_farm_invasion_usa_mod_apk3afuv.pdfIn PDF document text
    • https://cdn.sqhk.co/vegubefeno/cgd1CH3/survival_rate_of_breast_cancer_spread_to_liver.pdfIn PDF document text
    • http://manybigs.space/41260972311wavmz.pdfIn PDF document text
    • http://zulurasovuguloz.66ghz.com/71373504755.pdfIn PDF document text
    • http://confirmyourverifiedbadge.com/2948626318vt4i8.pdfIn PDF document text
    • http://bluetea.space/how_to_do_acrylic_nails_at_home_tutorial3l2pu.pdfIn PDF document text
    • http://lifeeuro.info/free_baby_stuff_for_low_income_families_nyc56qk9.pdfIn PDF document text
    • https://cdn.sqhk.co/bosamame/r0c5hhi/i_am_ping_pong_king_apk.pdfIn PDF document text
    • http://remontlegko.info/jurinavel85vt.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vudatuvabejosix.epizy.com/great_is_thy_faithfulness_piano.pdfIn PDF document text
    • http://sovizaz.epizy.com/nijirarizodotalajirumiw.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_off0000dfc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC5 5044 bytes
SHA-256: 8777bcd2b6968b47e57009160863d8ce71ca2a2d9bdebee20893e18cffc05097
font_01_sfnt_off0000f0fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0FC 11036 bytes
SHA-256: 4fd10181dbd67d27da2476fe7ed6f0ba7866fc0b097569d0904a4acad5cfa93c

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