Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f069801a08b16fa…

MALICIOUS

PDF

92.0 KB Created: 2021-03-28 12:58:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 631008662f19b10a0822fb61c789fd33 SHA-1: 6fae4177a52e79352c08bfb141d18291fec1f7a0 SHA-256: 4f069801a08b16fa7ad2a5d62453319120cbc998f5020abc28b18dc1d056756b
104 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of external URIs and a 'download button' heuristic suggests the document is designed to trick users into downloading further malicious content. Although no scripts were explicitly extracted, the PDF format can embed JavaScript, which is often used to facilitate malicious downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://gimoguvi.ru/award?keyword=caselet+di+pdf+for+clerk
    • http://bobujopolodusol.mygamesonline.org/84622655503.pdf
    • http://lobabinuladeri.medianewsonline.com/charter_remote_setup_new_tv.pdf
    • http://xutexukoxobofi.mywebcommunity.org/fairy_tail_anime_ranking.pdf
    • http://verifiedbadges-form.com/85770957878xhcm2.pdf
    • http://nabavawuzafurur.mygamesonline.org/left_behind_series.pdf
    • http://moxipafuxoxo.mygamesonline.org/movie_themes_easy_piano.pdf
    • http://negifowutagur.mygamesonline.org/edit_text_size.pdf
    • http://rastet-malysh.ru/una_vida_con_proposito_rick_warren_panamericana0873f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/15ae25f2-56bf-4b4a-9845-25cd86898d52/how_to_get_adt_box_to_stop_beeping.pdf
    • http://gitojaxekeveki.onlinewebshop.net/char_qul_download.pdf
    • http://doroxepazu.epizy.com/97147971246.pdf
    • https://uploads.strikinglycdn.com/files/8f85f4f3-744c-4886-a746-0ab2f7d786e9/55695276111.pdf
    • https://uploads.strikinglycdn.com/files/64ec765d-5261-4cb3-aa64-8b0c389236f3/lg_portable_air_conditioner_8000_btu_water_full.pdf
    • https://uploads.strikinglycdn.com/files/c3e9e18e-e82b-4cd0-9185-72e4186f3f14/39893239397.pdf
    • http://lurilufe.epizy.com/simple_mechanical_engineering_projects.pdf
    • http://pitaken.onlinewebshop.net/sogetikerenasewob.pdf
    • http://dowewuzosibu.epizy.com/nukinabofusuz.pdf
    • https://uploads.strikinglycdn.com/files/45273c01-d5bf-4c35-af26-94e89eaddfe2/panasonic_kx-tga939t_belt_clip.pdf
    • https://uploads.strikinglycdn.com/files/552cc848-06f4-4908-8dd7-363962d8546b/dungeon_and_dragons_players_handbook.pdf
    • https://uploads.strikinglycdn.com/files/d2351e6c-ae77-4eb1-96ea-ba02497d58d1/what_was_the_guerrilla_warfare_in_the_american_revolution.pdf
    • http://pododugeb.rf.gd/29650923131.pdf
    • http://vuxebezedigelun.onlinewebshop.net/10912331707.pdf
    • https://uploads.strikinglycdn.com/files/7bd1a021-01a8-4f22-ac17-30aef54c6643/mapa_de_riesgos_de_corrupcion_alcaldia_de_medellin.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000113e2.bin
2307adb40e675023cb8c9aa243c28f612d7ddf3375b6176859117c40f9566b2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x113E2 5120 bytes
font_01_sfnt_off0001255a.bin
280b7098d75f302878181747990f4c28a2fcbebb3c9a1e12eb380dadb181be4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1255A 11676 bytes
font_02_sfnt_off00014d59.bin
c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14D59 16204 bytes

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