Malicious PDF — malware analysis report

Static analysis result for SHA-256 e770cc51ef641080…

MALICIOUS

PDF

345.4 KB Created: 2021-03-20 03:47:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e8d44b89364de0480547f48ab658351 SHA-1: 114506d05dc125478065c44083387ce916adda75 SHA-256: e770cc51ef64108040fa8247257cd76a347bcec943ea42b9e7054247193d3e67
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that mimics a search query, likely intended to trick the user into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent. The PDF structure and embedded URL suggest a phishing or credential harvesting attempt, potentially leading to further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9618

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/wix?keyword=ancient+china+achievements+list
    • http://civiliscmq.online/ley_de_ohm_definicion_formulal928d.pdf
    • http://xagevogewa.medianewsonline.com/56614769352.pdf
    • https://cdn-cms.f-static.net/uploads/4445341/normal_601b8c705e544.pdf
    • http://randname.ru/formas_bsicas_de_comunicacin_escrita_en_las_organizaciones5tvwa.pdf
    • https://static.s123-cdn-static.com/uploads/4416319/normal_5fdfceb9168af.pdf
    • https://cdn-cms.f-static.net/uploads/4419437/normal_6013b5897daa0.pdf
    • http://shoop-ff.ru/popeleh2e5m.pdf
    • http://kovamuwaropepu.getenjoyment.net/16297035946.pdf
    • http://masito.space/how_to_reset_ipod_nano_1st_generation_to_factory_settingsn21jn.pdf
    • https://cdn-cms.f-static.net/uploads/4490256/normal_6010a85c3eac5.pdf
    • http://gekifek.scienceontheweb.net/dipomowoboloxivuvojibi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bajupigirosinaf.atwebpages.com/gita_chapter_2_verse_41.pdf
    • https://uploads.strikinglycdn.com/files/1dd083cf-be7b-4907-bec2-7ee250cdb6fa/busimijupaxewotaw.pdf
    • https://uploads.strikinglycdn.com/files/fe971056-0384-4cfe-8910-fd2a934b7c55/richmond_encore_tankless_water_heater_error_code_29.pdf
    • https://uploads.strikinglycdn.com/files/fd67eb23-a1b1-4dbd-ae24-af092f470c0e/geralds_game_full_movie_free_download_in_hindi.pdf
    • https://uploads.strikinglycdn.com/files/f857d2bf-4522-4627-ae7d-ff65e5aecf59/44397674509.pdf
    • https://s3.amazonaws.com/tuxalowafokuvo/pokemon_emulator_android_reddit.pdf
    • https://s3.amazonaws.com/wolawatin/blame_game_piano_sheet.pdf
    • https://s3.amazonaws.com/rujimidujek/aradhike_song_lyrics.pdf
    • https://s3.amazonaws.com/xonaxevetaf/information_about_1st_battle_of_panipat.pdf
    • https://s3.amazonaws.com/xaliwalufoguni/67380282226.pdf
    • https://s3.amazonaws.com/xoxaneral/28314270643.pdf
    • https://uploads.strikinglycdn.com/files/8a5a015f-8e88-4de8-8556-e397c03e3c36/4234103784.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00049206.bin
4cabc71d6ae5fe21c3f4d42fa57d6445e2a917109451e1b207f69a705045f0c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49206 45120 bytes
font_01_sfnt_off00051941.bin
f8b25b80953d81d15c8b836d48975b17089dee112944fc8ba2b44a86dca14459		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51941 4992 bytes
font_02_sfnt_off00052a1f.bin
4db935a42b1fdbdec877e2b3ea0b11066e3fad3afcc1d9dacabd447b31a7afd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52A1F 14296 bytes

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