Malicious PDF — malware analysis report

Static analysis result for SHA-256 361a05d314976a46…

MALICIOUS

PDF

76.4 KB Created: 2021-03-08 14:36:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: ea58c211f8dd0a2291d436b45711b735 SHA-1: b554df233f1db61cc9976b35558149c39cff808d SHA-256: 361a05d314976a46bb4d15525abb3f98bac9bfcbb750f5016e111cc0f97216ba
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan distribution attempt. The document contains numerous external links, including one to 'mezovuduw.ru', which likely serves as a lure for downloading a second-stage payload. The presence of a 'download button' heuristic further supports the malicious intent of tricking users into executing further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://mezovuduw.ru/award?keyword=asme+b31.+1+free+pdf PDF link annotation
    • http://sigorododosub.iblogger.org/35114670763.pdfIn PDF document text
    • http://maddot.space/radio_flyer_wagon_instructionsmd3vm.pdfIn PDF document text
    • http://vashe-zdorovie.xyz/legend_of_heropolis_mod_apk_latest_versionzr1sy.pdfIn PDF document text
    • http://1yamal.space/95057315474o0xvt.pdfIn PDF document text
    • http://tvoyoproc.fun/key_informant_interviews_advantages_and_disadvantagesowebp.pdfIn PDF document text
    • http://girlita.space/spalding_nba_basketball_hoop_costcobk81t.pdfIn PDF document text
    • http://grafoanaliz.ru/281788000818hd2o.pdfIn PDF document text
    • http://hydraruzxpnew4af.exchange/office_manager_jobs_london_ukwudov.pdfIn PDF document text
    • http://oneitstore.pro/guidelines_gastric_polypsesds9.pdfIn PDF document text
    • http://zigejetulanoda.iblogger.org/what_did_the_four_main_early_civilizations_have_in_common_geographically_and_culturally.pdfIn PDF document text
    • http://goodnaturak.space/wigelumabixawiruwtbqp4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xutirekivob.rf.gd/wawilenimitiwumapirojinix.pdfIn PDF document text
    • http://dawutanarav.epizy.com/corel_draw_x7_keygen._rar_free.pdfIn PDF document text
    • http://jibipadesubamom.epizy.com/simple_education_website_templates_free.pdfIn PDF document text
    • http://mibexaluji.epizy.com/see_chegg_answers_free_2019.pdfIn PDF document text
    • https://f89b8795-a90f-4359-81e0-6309601a98d9.filesusr.com/ugd/8e7730_6313f22de86144e6935c63e949927742.pdf?index=trueIn PDF document text
    • http://bowedujo.rf.gd/79838438780.pdfIn PDF document text
    • http://biwonopo.epizy.com/fb_brute_force_attack_apk.pdfIn PDF document text
    • https://d2d87fd5-5f4d-49aa-ab3c-2263ce4b5d22.filesusr.com/ugd/9169d2_91cc56bdf260439199462b3e0edf7b60.pdf?index=trueIn PDF document text
    • http://virixavop.epizy.com/guide_rock_ne_news.pdfIn PDF document text
    • http://fafozega.rf.gd/bulipodetetibagefagas.pdfIn PDF document text
    • https://04934832-22f3-474e-96de-b9d593e92251.filesusr.com/ugd/f390e7_76a63c0c8e8644f6a78f53dabf7e61cc.pdf?index=trueIn PDF document text
    • https://144ece88-722e-4d59-a9d1-ae16887514c2.filesusr.com/ugd/48b17f_1f5ad07865844628944c2bc714416f02.pdf?index=trueIn 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_off0000ee26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE26 5324 bytes
SHA-256: a84e2e80c2e87e43393b1c1b66b30fccb27dd3169f1e854d3b69c2bb01c598c3
font_01_sfnt_off00010034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10034 10528 bytes
SHA-256: 1292c9c9e5184772bfa33b738992bafd9503cca9d97fcf16832c3d14b264582a

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