Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae217cc46a35a87a…

MALICIOUS

PDF

89.5 KB Created: 2021-04-05 11:01:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 27542ec62bd61a7a0a1ab78f4f639887 SHA-1: 2609367a4b97d29214b761fa9a5be366105d48bc SHA-256: ae217cc46a35a87a11d4c83a0901fcc618a56716d7d605299e7efe0a993dc4dc
206 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document exhibits multiple high-risk heuristics, including a machine learning model flagging it as malicious and a lure for clipboard command execution. The presence of numerous external URIs, many on disposable hosting, suggests a phishing or credential harvesting attempt. The document's structure and heuristics indicate it's designed to trick the user into executing commands, likely to download and run a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://pelibifir.ru/strik?utm_term=linux+basics+cheat+sheet PDF link annotation
    • http://lojapidabud.mypressonline.com/lusaxulosazegabasobez.pdfIn PDF document text
    • http://lorewipa.scienceontheweb.net/letters_and_sounds_document.pdfIn PDF document text
    • http://fajasated.mywebcommunity.org/120_ml_a_gramos_liquido.pdfIn PDF document text
    • http://jesofoma.getenjoyment.net/84079703312.pdfIn PDF document text
    • http://nupifijaw.getenjoyment.net/guia_autometrica_2020_gratis.pdfIn PDF document text
    • https://gapudozesaneg.weebly.com/uploads/1/3/4/5/134525911/5d67ae7.pdfIn PDF document text
    • http://tupujetu.sportsontheweb.net/winkler_method_for_dissolved_oxygen_analysis.pdfIn PDF document text
    • http://fajujefa.getenjoyment.net/97231197643.pdfIn PDF document text
    • https://safamitiwifiro.weebly.com/uploads/1/3/0/7/130739579/7658339.pdfIn PDF document text
    • http://nutosuvitiraj.scienceontheweb.net/86824868807.pdfIn PDF document text
    • http://jujovobima.getenjoyment.net/3736207016.pdfIn PDF document text
    • http://sugoxebojun.getenjoyment.net/babysitting_application.pdfIn PDF document text
    • https://dofedexakupular.weebly.com/uploads/1/3/4/3/134317333/fukabonuwevegatover.pdfIn PDF document text
    • https://zoxexakaxikat.weebly.com/uploads/1/3/0/7/130739387/kutezozuw-xesajepawuvoso-sigokago.pdfIn PDF document text
    • https://cheatography.comIn 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/bc0db6b6-86c9-4159-bfea-73871d3e6ed3/how_much_is_a_kfc_double_down.pdfIn PDF document text
    • http://xowilewegiwo.myartsonline.com/23310535940.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb809cdd-d41f-4cea-bdae-1d08b623c098/manchester_journal_of_international_economic_law_impact_factor.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/can_you_make_a_smoothie_with_just_yogurt_and_frozen_fruit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/452ec384-12f9-4f60-93a3-1046d5892b6d/scientific_method_practice_answer_key_8th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/fakiruli.pdfIn PDF document text
    • http://vokesakogo.onlinewebshop.net/30355342700.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c20e8cf-3cfd-4dac-974e-70079d4dbade/audiolibro_cien_aos_de_soledad_capitulo_11.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8b2f56a-437f-488a-aa08-d2ecb50062b1/what_to_buy_your_godson.pdfIn PDF document text
    • http://todiwefexoneb.atwebpages.com/vafup.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010923.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10923 4908 bytes
SHA-256: c592d4f214db443b08de9769162b5ac750986be7ab516f7b52622b42e2d8ca5a
font_01_sfnt_off000119da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119DA 12280 bytes
SHA-256: 0e9845ebf4408f61563381c8760a167cc0f62edb936e1c14eee87117e68f5c41
font_02_sfnt_off000143bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143BB 16060 bytes
SHA-256: 2173a1880e9f774f759393e7d0d28dda91d04d8a3eae6bea41b822770b343b90

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