Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab4014b35813f753…

MALICIOUS

PDF

72.4 KB Created: 2021-02-27 18:39:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4983efe125d801351bd509b45326d19c SHA-1: bc862c260dea8b8eee4f8611156c081f964749e2 SHA-256: ab4014b35813f7531e076a7e18df60ba12c74fddb40ffb0625e3b8e4106d4634
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://jottigo.ru/award?keyword=briggs+and+stratton+500+series+oil+amount PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4483331/normal_5fe7574fdc6fa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448103/normal_5ff2bd608196a.pdfIn PDF document text
    • http://sait-ok.ru/stand_alone_shop_meaning_in_tamilouah9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417652/normal_602e7a31115df.pdfIn PDF document text
    • http://toppiksnack.xyz/hoyt_bow_black_friday_salet6cio.pdfIn PDF document text
    • http://tk-time.site/adopt_an_insect_word_search_answer_key1nqzi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374979/normal_6006ddba2f861.pdfIn PDF document text
    • https://cdn.sqhk.co/goduwonon/mhjgcOa/zefulirogawipasomus.pdfIn PDF document text
    • http://top-odejda.com/cystic_fibrosis_geneticskrts0.pdfIn PDF document text
    • https://cdn.sqhk.co/rifibimilo/djbbgj9/tornado_warning_valdosta.pdfIn PDF document text
    • http://ig-copyrightnoticehelp.com/bevesokusebisieejra.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445881/normal_5fdee6331aead.pdfIn PDF document text
    • http://damvglaz6.xyz/rudekufegibanumxntkp.pdfIn PDF document text
    • https://cdn.sqhk.co/tidaxetosi/V3jdDij/lovecraft_country_season_2_confirmed.pdfIn PDF document text
    • https://cdn.sqhk.co/baxijaxazixi/AjbRMie/85365945205.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392457/normal_602e02a643c96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423699/normal_603228333d7f4.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_off0000de22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE22 5460 bytes
SHA-256: 58e3ab1f0df93842c6e7350298527349debd2a330849bb631c8fac84f28fe39f
font_01_sfnt_off0000f09e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF09E 10384 bytes
SHA-256: f5df59a748b2ba6fd65a460b1d29062411a9331028b0635a9086db61f75d9015