Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdba385d671d6e67…

MALICIOUS

PDF

70.6 KB Created: 2021-02-07 23:03:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 00bccc571ff0871858f6c44e88362dd0 SHA-1: 7a1ebb41696558ac631d058d6cd3c7145fa37daa SHA-256: fdba385d671d6e67dfb5b7e43f86b315466f0b64ed7dc05e08bc745e051ebe55
184 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
  • 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 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://crophysi.ru/wb?keyword=negative%20thoughts%20examples%20pdf In PDF document text
    • http://conicppjry.bid/pafanezovidixetenubemirtjcy8.pdfIn PDF document text
    • https://cdn.sqhk.co/pijuvedozuw/jdOhaR9/ralupanutagazinu.pdfIn PDF document text
    • http://medway24.com/toggled_led_t8_installationoq1vj.pdfIn PDF document text
    • http://accface.in/vosexg2tkn.pdfIn PDF document text
    • http://checkyourcredit.info/apple_watch_applicationl44i0.pdfIn PDF document text
    • https://cdn.sqhk.co/xufaribo/viiv3tU/88516734659.pdfIn PDF document text
    • http://ionatr.space/fivem_transport_tycoon_trucking5ctqp.pdfIn PDF document text
    • http://covid-19online.site/luxor_deluxe_real_lifej9bik.pdfIn PDF document text
    • https://cdn.sqhk.co/fuluniziwav/jMKijid/mukorupezamogel.pdfIn PDF document text
    • http://malespw.xyz/base64_format_javaozwsh.pdfIn PDF document text
    • http://afracheat3.xyz/core_marketing_conceptsu2i2w.pdfIn PDF document text
    • http://digitalmicroteter.xyz/ways_to_watch_shows_with_friends_onlineiw2by.pdfIn PDF document text
    • http://grampus-shop.com/asrock_h61m-_vg3_bios7cwfi.pdfIn PDF document text
    • https://cdn.sqhk.co/jagugide/jfLjdjb/btd_battles_unblocked.pdfIn PDF document text
    • http://matroskin.space/overkill_lyrics_metallica1jmb6.pdfIn PDF document text
    • http://ukranews.site/unicorn_pool_party_invitation_template_freedz6mi.pdfIn PDF document text
    • https://cdn.sqhk.co/dopiporajen/xUiiifz/mexican_football_league_results.pdfIn PDF document text
    • http://ita-talia.fun/science_et_vie_photographiekcmow.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d8fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8FD 5456 bytes
SHA-256: ff0ce9e6337bbb0081fb5699d26125b087f4a945bc3c4437f7993882d5dc7b9b
font_01_sfnt_off0000eb86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB86 9984 bytes
SHA-256: 5493ffdf48f8aad13892d4f9b9c22ce99807ee9fe29b4a3bf4086278d5293387