Malicious PDF — malware analysis report

Static analysis result for SHA-256 9793eb8e10c0736c…

MALICIOUS

PDF

76.5 KB Created: 2021-05-11 07:22:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: d2a681444113a7c23f01083790828939 SHA-1: b24d369e0f9b7c4fab045442eae756880bd19743 SHA-256: 9793eb8e10c0736c5c99af0dadc1d5a95cbf677c611e00bc61385a5bee1d6e45
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://lozipotod.ru/strik?utm_term=what+does+360+degrees+mean PDF link annotation
    • http://allwoman.site/free_lodger_agreement_template_word60q2o.pdfIn PDF document text
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdfIn PDF document text
    • http://lamovingcompany.com/how_to_use_ergobaby_360_cool_air65htp.pdfIn PDF document text
    • http://mamuxorap.getenjoyment.net/upsc_prelims_2020_answer_key.pdfIn PDF document text
    • http://drenajkrasnodar.ru/sufidowepaxisvdq04.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502833/normal_5ff81ba3bd3a2.pdfIn PDF document text
    • http://notdull-eng.online/video_minimizer_apkd358c.pdfIn PDF document text
    • http://card2card-perevod24.site/parilil0dmfq.pdfIn PDF document text
    • http://shlifovka-pol.website/how_many_lines_are_in_the_play_romeo_and_juliets_deaths_foreshadowed_throughoutdtgir.pdfIn PDF document text
    • http://omerkatanalp.com/1919175728885v0o.pdfIn PDF document text
    • http://tufodudem.mypressonline.com/80430830862.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445882/normal_606df7563ce2a.pdfIn PDF document text
    • http://potawuzaj.medianewsonline.com/merimajavesuvinomemi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rigutogivopum.epizy.com/every_man_battle_full.pdfIn PDF document text
    • http://rowoniwetob.atwebpages.com/halloween_worksheets_free.pdfIn PDF document text
    • http://xowitulodif.rf.gd/42401451301.pdfIn PDF document text
    • http://begagujimuro.epizy.com/nawafoxifebox.pdfIn PDF document text
    • http://borojajajeworem.epizy.com/wenok.pdfIn PDF document text
    • http://konajif.epizy.com/24054524241.pdfIn PDF document text
    • http://radiviwix.onlinewebshop.net/7711849121.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_off0000ee05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE05 5680 bytes
SHA-256: f32d3dd7c3b09e70401df69b0b4b84251f7ff2f54437fc7cf10a918690cc530b
font_01_sfnt_off00010132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10132 10612 bytes
SHA-256: 2705d150a38c5a9e81eb54f249f1565322053ae5af3487a38a6f7d7b5bc0c08c

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