Malicious PDF — malware analysis report

Static analysis result for SHA-256 380294397a65647d…

MALICIOUS

PDF

85.8 KB Created: 2021-03-23 03:39:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 86e59f09f0239e28839898f8c9a1e3aa SHA-1: 912ae009a81e9904f1cf0b8ade343406ca5a073c SHA-256: 380294397a65647d991e1729c54fe07ab5d32e2022fbc8da7f8be556e9dc8d1a
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to disposable domains, suggesting a link farm or phishing lure. The presence of a 'download button' heuristic further supports the idea that the document is designed to trick users into downloading a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://baarspo.ru/aws?utm_term=how+to+interview+a+dba PDF link annotation
    • http://allerop.xyz/corporate_social_responsibility_reporting_guidelines46pvm.pdfIn PDF document text
    • http://dimoguzix.iblogger.org/manual_canon_speedlite_580ex_ii_flash.pdfIn PDF document text
    • http://vorecan.space/tactics_for_listening_basic_second_editionh13st.pdfIn PDF document text
    • https://cdn.sqhk.co/nezubanos/TWzhdgd/sobamibabiwi.pdfIn PDF document text
    • http://erogan-encolumbia.site/household_expenses_spreadsheet_australiatdtcx.pdfIn PDF document text
    • https://cdn.sqhk.co/tewisifupib/cEjbjcb/free_online_multiplayer_word_games_no_download.pdfIn PDF document text
    • https://cdn.sqhk.co/jabisopomuxo/oqhilia/roblox_ragdoll_engine_push_hack.pdfIn PDF document text
    • http://fartook.online/excel_vba_tutorial_in_tamildcx1c.pdfIn PDF document text
    • http://vizazovabula.mywebcommunity.org/hoover_elite_rewind_upright_vacuum_cleaner.pdfIn PDF document text
    • http://fapasevusiledap.mygamesonline.org/sazel.pdfIn PDF document text
    • https://cdn.sqhk.co/lasumalena/Vcxfgf8/48997106100.pdfIn PDF document text
    • http://devubowoku.mypressonline.com/direito_penal_3_bitencourt.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/df7f399c-1551-4aea-8e35-e9958714cbcc/gomafoxopi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3e7689b-5951-4c23-b5b4-19923c09c097/prodigy_hegelian_dialectic_the_book_of_revelation_cd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6a7bf25-b68e-4a56-91c2-fee52e46c8fc/traducir_ingles_espaol_online_gratis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15374d4a-2d61-4add-a2fc-1aad49b65d59/kill_team_40k.pdfIn PDF document text
    • http://vuruwabudakase.epizy.com/juzifewilebetav.pdfIn PDF document text
    • http://ratotepuno.rf.gd/do_i_need_to_read_percy_jackson_before_trials_of_apollo.pdfIn PDF document text
    • http://mudepenota.epizy.com/81196508583.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fbf604e-d0a3-4dcc-a1a0-c7ae754376ef/hp_officejet_7612_wide_format_e-aio_printer.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_off00011267.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11267 4864 bytes
SHA-256: 0b65aea724442412320591bea0d41c58163aa54d7abc332d73d07016fc6ce868
font_01_sfnt_off00012311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12311 11580 bytes
SHA-256: 12c6d8b094eeaa25e3ffb0107ca7c770028c43221dd531dc7c5c01e10eca1e5b

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