Malicious PDF — malware analysis report

Static analysis result for SHA-256 0347c83df8b6cb56…

MALICIOUS

PDF

70.6 KB Created: 2021-03-07 02:05:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 03423db1364068d6b6ef82a1879ff618 SHA-1: 89a8f4bfb7427bf65e1e91b05e1c177528864e39 SHA-256: 0347c83df8b6cb56472d891fb5ae57e8f4243b9b6b243474d1a45e0bff5492c8
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=antigone+study+guide+scene+3 In PDF document text
    • https://gotukedefiwukub.weebly.com/uploads/1/3/5/3/135309477/481a5021e1dfee3.pdfIn PDF document text
    • https://cdn.sqhk.co/sefibenip/ahdLcpT/77322414874.pdfIn PDF document text
    • http://flipping-car.online/rimonotagemsngr.pdfIn PDF document text
    • https://cdn.sqhk.co/nuxasedazu/a48OL3m/87491519666.pdfIn PDF document text
    • http://worldhold.online/programming_tutorial_csjb2i.pdfIn PDF document text
    • http://nanolenka.xyz/zebenidesuret6d9n8.pdfIn PDF document text
    • https://cdn.sqhk.co/parabeset/hgjFYAN/sediwokukaxibapejamujum.pdfIn PDF document text
    • https://zitipijasidigor.weebly.com/uploads/1/3/0/8/130874434/39752a02e.pdfIn PDF document text
    • https://bonosojemigapa.weebly.com/uploads/1/3/0/7/130776366/5649882.pdfIn PDF document text
    • https://cdn.sqhk.co/tatidukigag/ctNUicG/mix_app_apk_download_live_net_tv.pdfIn PDF document text
    • https://cdn.sqhk.co/pigajifaw/agcI2jg/spirit_run_free_lyrics.pdfIn PDF document text
    • http://metalllift.ru/john_deere_310sj_backhoe_loader_repaooouy.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/97a29058-13a1-481d-b345-34400d1ec928/river_flows_in_you_sheet_music_violin_and_piano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/469cd94b-f491-4d39-ba81-720971b702cb/mitologia_griega_de_medusa_y_poseidon.pdfIn PDF document text
    • http://tuxizosog.rf.gd/refractory_hypoxemia_guidelines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c08f6b5b-97fa-42ea-b4e3-d6f1db95924f/pagepajike.pdfIn PDF document text
    • http://bikikifuxax.epizy.com/54876030196.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e4b1ab4-8814-4c1f-b5e2-6e74e29ddba3/xedaguxuwudusunololibemo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/771facf8-e0f4-40ce-bbf0-ccb6e06de10c/aprender_ingles_musica_gratis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1cca671-66c1-4b58-9023-1d6cd505ad63/how_to_write_an_ebook.pdfIn PDF document text
    • http://xajuvezovaguze.rf.gd/87019055038.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_off0000da81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA81 5024 bytes
SHA-256: 880bad65cd9620ae11d5ae864182b86eeedd8a04cb0c3d747d5d8a21ceacc3a1
font_01_sfnt_off0000ebc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC5 9788 bytes
SHA-256: 73590518d9668cc788fd0f5983a4f06e012a83225def4ceb088e16da2054a37c