Malicious PDF — malware analysis report

Static analysis result for SHA-256 4573a8dfa1b0ec81…

MALICIOUS

PDF

69.6 KB Created: 2021-03-05 02:17:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: fed6f7a9609e47ec10c661bbc1c50366 SHA-1: 8a921e0943395fb7fdae75e8bd4a1998bc4a93a5 SHA-256: 4573a8dfa1b0ec81abcaeddadf763c06ac2cea25a07e81dfe15cbdac6c7303ce
206 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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=kitchenaid+stand+mixer+blue+ice PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4479213/normal_5ff0c8dcb5e88.pdfIn PDF document text
    • https://cdn.sqhk.co/dorusafe/gc3aJjj/puzzle_bobble_3do.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404105/normal_602d3763a31c8.pdfIn PDF document text
    • https://cdn.sqhk.co/bikawegaj/7vhiii8/23391818371.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460950/normal_5ffc678c2c16d.pdfIn PDF document text
    • https://cdn.sqhk.co/rifokinimito/iieibgh/cruise_travel_agent_jobs_near_me.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454990/normal_5fe0044e0d36f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447877/normal_602f381b747ed.pdfIn PDF document text
    • https://cdn.sqhk.co/lesebonun/jjbjhUT/ragesupilunoxexa.pdfIn PDF document text
    • http://jemulobapamiwu.mywebcommunity.org/zmodo_wireless_camera_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404725/normal_602e1f6786a71.pdfIn PDF document text
    • http://betijeduw.getenjoyment.net/my_name_is_red_book_quotes.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvurero/IP8gjie/spinning_shirts_for_sale_port_elizabeth.pdfIn PDF document text
    • https://cdn.sqhk.co/posojuvapono/0tGOjes/fipurikibalip.pdfIn PDF document text
    • http://lorakuze.sportsontheweb.net/the_stand_cbs_episode_1.pdfIn PDF document text
    • https://cdn.sqhk.co/zelosoza/Lgi1shf/91450248385.pdfIn PDF document text
    • http://kozidozilujivox.getenjoyment.net/rurizuzasutugarewifizulam.pdfIn PDF document text
    • http://fobativ.mywebcommunity.org/how_to_listen_to_music_while_swimming.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388165/normal_601225e56a409.pdfIn PDF document text
    • https://cdn.sqhk.co/xasexuwosul/hbc5iim/65461034783.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://86b7bb9a-6a0b-496c-a062-e8aa60c365d0.filesusr.com/ugd/dcf311_cf9478f00c624165bb6c81e5e4c026e5.pdf?index=trueIn PDF document text
    • https://73f4d879-981c-49fe-abc7-520f36a14a84.filesusr.com/ugd/b77b08_6421383d1c73468aa5afbb9005eb648e.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_off0000d298.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD298 5356 bytes
SHA-256: d65c3c2cdee301a0bf1875b61e7648ba240230dd6fb27f06ee7157dc30724d06
font_01_sfnt_off0000e4a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4A3 10336 bytes
SHA-256: 491450ce3e6b92c655520049b9b58c410cbab529304ba30d8af0feb02d1b26c0