Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bea91764e9566af…

MALICIOUS

PDF

73.0 KB Created: 2021-03-31 19:27:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: f13b02945180f075a48bf2ed5eb953bf SHA-1: 565ed044ba6b6a4d71f898d2cb4039d686358455 SHA-256: 5bea91764e9566af52d77786afbe3d8dd56b6e48f30f038f4f921e169965b63f
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The 'SE_CLICKFIX' heuristic suggests the document is designed to trick users into running commands, likely to download and execute a secondary payload. The presence of external URIs, such as maypoin.ru, further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://maypoin.ru/award?keyword=convert+pdf+to+word+apple+free PDF link annotation
    • http://zdorovienashevse.xyz/53985174603y9q0s.pdfIn PDF document text
    • http://xufulop.iblogger.org/test_di_ammissione_bocconi.pdfIn PDF document text
    • http://lnstagramverifiedbadgeservice.com/sudotuvalobovelegcxry2.pdfIn PDF document text
    • http://wilexani.22web.org/68426453897.pdfIn PDF document text
    • http://tixomuwenape.22web.org/89104081880.pdfIn PDF document text
    • http://vehicleusains.com/21886905882kn17g.pdfIn PDF document text
    • http://50offstore.pro/sap_treasury_and_risk_management_downloadhqrmz.pdfIn PDF document text
    • http://idealicaitalia-official.site/stack_ball_2_mod_apk68xds.pdfIn PDF document text
    • http://goodxday.xyz/final_fantasy_xv_ps4_digital_codec1yhz.pdfIn PDF document text
    • http://top-odejda.com/download_autocad_blocks_furniturex7ayz.pdfIn PDF document text
    • http://stassikorskyi.com/photosynthesis_whats_in_a_leaf_pack5c03a.pdfIn PDF document text
    • http://complerbnp.com/523586760098nmmo.pdfIn PDF document text
    • http://zawixudaja.22web.org/brother_hl-5370dw_drum_reset.pdfIn PDF document text
    • http://secureappeal.com/zuteliliwolemikitiferanu9pihq.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/24cbaf39-9319-4552-9d5c-81c8bcdecd9b/how_do_i_turn_on_my_hp_touch_screen.pdfIn PDF document text
    • http://wekijedi.epizy.com/steps_to_personal_revival_audio.pdfIn PDF document text
    • http://bevonox.epizy.com/dinamalar_calendar_2019_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b18f67a-0772-437f-8258-b6ad66785b2f/serato_ddj_sx2_driver_free_download.pdfIn PDF document text
    • http://kivutivepew.rf.gd/abandono_paterno.pdfIn PDF document text
    • http://zuvineduwofuxo.epizy.com/heads_features_and_faces_george_bridgman.pdfIn PDF document text
    • http://funurebebepoti.epizy.com/quartz_westminster_chime_clock_instructions.pdfIn PDF document text
    • http://xakafof.rf.gd/can_divorce_lawyer_subpoena_bank_records.pdfIn PDF document text
    • http://wixukitasezi.epizy.com/reznor_heater_parts.pdfIn PDF document text
    • http://sewegijod.rf.gd/quantitative_risk_management_concepts_techniques_and_tools_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae69451e-fe65-4945-bbea-0bf47efc30d7/69621099984.pdfIn PDF document text
    • http://tugosamerela.rf.gd/93026519975.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_off0000e18b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE18B 4912 bytes
SHA-256: da8e2ab8a586407698d422df7999b6fc55ad30896e1494f8568ee2cc6a61ad7d
font_01_sfnt_off0000f266.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF266 10568 bytes
SHA-256: a79373e3033363b60166dc8f2eda83b1ce3f6a0752e5f8ca8384ef441be0b2ad