Malicious PDF — malware analysis report

Static analysis result for SHA-256 e11123ec955c57e6…

MALICIOUS

PDF

77.3 KB Created: 2021-03-10 23:50:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 1bc434cd3e61abb21db26e2d3c1a4bec SHA-1: d20a72aefda6822b78369384682bc9bba3c6bf45 SHA-256: e11123ec955c57e66ef3e0721866e22437bb9c5f905ad94af12582a55bfbe70c
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, with at least one pointing to a suspicious domain ('ponafet.ru') that is likely used for phishing or malware distribution. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the PDF is designed to host many links on disposable domains, further supporting a malicious purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://ponafet.ru/wix?keyword=epistane+hair+loss PDF link annotation
    • https://cdn.sqhk.co/wugoxoxowex/Vpkhbij/orange_granny_scary_horror_game_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/devepogisog/jbDnvje/cat_warmer_house.pdfIn PDF document text
    • http://neyroskakalka.site/what_is_the_difference_between_iatf_and_iso1xh2p.pdfIn PDF document text
    • https://cdn.sqhk.co/mezutorixo/gjrZjiy/lakikujududur.pdfIn PDF document text
    • https://cdn.sqhk.co/zolulesar/2igogeJ/87888099158.pdfIn PDF document text
    • http://bapozuwemixad.22web.org/baking_sheet_function_and_uses.pdfIn PDF document text
    • http://saxumoru.iblogger.org/82891907978.pdfIn PDF document text
    • https://cdn.sqhk.co/tuledapozato/jaWgcih/torn_rotator_cuff_symptoms_nhs.pdfIn PDF document text
    • https://cdn.sqhk.co/wularumijif/5dwphe2/67738934559.pdfIn PDF document text
    • https://cdn.sqhk.co/fizuborugas/jdmDYgh/free_robux_working_september_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/dokukavifig/QLKN6hh/motogp_qualifying_results_austria.pdfIn PDF document text
    • http://ontrade.top/akka_framework_tutorialmb4z6.pdfIn PDF document text
    • http://bivisurat.22web.org/why_does_my_dryer_not_heat_up_sometimes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/70c60f5b-be98-4dd1-8998-75001dc8b887/57690757914.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e295d8d-78f7-4356-9762-91ee08aba02b/printable_gold_card_application_harris_county_spanish.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41d89a55-bcc4-4b20-a72f-5fcfca08bf20/93296097096.pdfIn PDF document text
    • http://wexiwukivenuxaf.rf.gd/pexojofefebipekot.pdfIn PDF document text
    • http://tifelirixomekap.epizy.com/what_factors_are_density_dependent.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/973f9e0d-95cb-4d9a-b26b-2ea57ed70016/honda_hrx217hya_service_manual.pdfIn PDF document text
    • http://wojobawezelo.rf.gd/usb_burning_tool_mac.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_off0000f531.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF531 4864 bytes
SHA-256: db2cf452b58f898f42e1e823f66a5aa4f7274238bd24163805923e1c54a88b01
font_01_sfnt_off000105b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105B2 10072 bytes
SHA-256: 9477afca21b7f9b3612c0df6d50154b316a43510898dd71e02a3269d1ed61758

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