Malicious PDF — malware analysis report

Static analysis result for SHA-256 aad3707a80736e96…

MALICIOUS

PDF

72.5 KB Created: 2021-04-06 07:41:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2053f7ba57560e84bd34ea1fb44ec21a SHA-1: 1ba2c30d524ec02ab46102892be4c09a3bcf98a1 SHA-256: aad3707a80736e96871b9968a42b22cacc388f248561bdb77bc761fc345de5bc
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://pelibifir.ru/award?keyword=carrie+s+war+pdf+download PDF link annotation
    • https://cdn.sqhk.co/zobadaxejaz/gd8jdhh/27118494172.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402737/normal_5fcddebf181bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492245/normal_60294be27dcfd.pdfIn PDF document text
    • http://fepenikozi.22web.org/top_5_junji_ito_manga.pdfIn PDF document text
    • http://tagoturuluro.medianewsonline.com/hp_probook_6570b_preis.pdfIn PDF document text
    • http://witaseru.iblogger.org/zeforuvidolejakapuse.pdfIn PDF document text
    • http://zanofijufitif.22web.org/rode_videomic_ntg_price_hk.pdfIn PDF document text
    • https://cdn.sqhk.co/jarogofef/Pgihfij/pac_man_ghostly_adventures_2_walkthrough.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cee4a208-09ac-40e0-983f-4c2cc776acbe.filesusr.com/ugd/5ed537_40f20241df5b48b181ec3d03be84ba52.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a284dcb7-b84c-4d33-8b8c-185a0f65cee7/harry_potter_characters_hogwarts_houses.pdfIn PDF document text
    • http://siripuxem.rf.gd/dd_4th_edition_dungeon_masters_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f0b4a96-3905-4fd2-b862-f5552d7fe46c/how_to_become_a_certified_cdl_driver_instructor_in_texas.pdfIn PDF document text
    • https://05282879-aed3-4f16-ac14-d534add4d4bd.filesusr.com/ugd/0f8b7c_1c3b57a1a30742ef82db692951a560a6.pdf?index=trueIn PDF document text
    • http://mikijanux.atwebpages.com/pmay_g_application_form_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24ea4e5c-6430-4f37-b3f7-3c1369b3b48e/caracteristicas_de_un_algoritmo.pdfIn PDF document text
    • http://wufikemofumop.atwebpages.com/onkyo_tx-nr626_bluetooth_setup.pdfIn PDF document text
    • http://fufezexu.epizy.com/kanthan_alankaram_tamil_film_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2823a2f-707c-45c6-9d16-27f085b43631/vimudefiwegemivetaji.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_off0000df26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF26 5032 bytes
SHA-256: 835a487aef84a77e23c15ca40925ec7ad63722baa848b8f84f8850d79692f41e
font_01_sfnt_off0000f068.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF068 10700 bytes
SHA-256: 99711ce36400d60b3e9c667f15323780bb81655ddc2a52f36401f24679939f79

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