Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb7e7f4e4eae3159…

MALICIOUS

PDF

67.6 KB Created: 2021-02-28 17:57:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4def7f7ecca26cbe901663acde3f42d7 SHA-1: b49cca3e8d251acb971a1aa1f5cdb34c2776a5ae SHA-256: fb7e7f4e4eae3159da80141c52f9758914339458c84164ab6131664b9dc8b52e
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://fokemale.ru/award?keyword=what+to+make+on+a+george+foreman+grill PDF link annotation
    • https://livubefelamujir.weebly.com/uploads/1/3/4/8/134899239/2346f69ad.pdfIn PDF document text
    • https://nawajutexi.weebly.com/uploads/1/3/4/1/134108687/deeb938bad8eb3.pdfIn PDF document text
    • https://cdn.sqhk.co/kawinojos/djhicjj/21951615358.pdfIn PDF document text
    • https://cdn.sqhk.co/kofatuziwu/gXzIhf2/kukidufisesiga.pdfIn PDF document text
    • https://gimituwemowi.weebly.com/uploads/1/3/4/8/134872285/sezajodisilax.pdfIn PDF document text
    • http://wumijodurixemi.22web.org/87355233025.pdfIn PDF document text
    • https://cdn.sqhk.co/kitolitik/he73nct/58056678229.pdfIn PDF document text
    • https://fuwipinax.weebly.com/uploads/1/3/4/0/134016709/siseremojekos.pdfIn PDF document text
    • http://dibemefufa.iblogger.org/what_has_been_the_worst_bushfire_in_australia.pdfIn PDF document text
    • https://lotatodekimin.weebly.com/uploads/1/3/4/7/134705716/e3c73981ce315.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fuvidokibet/solfeggietto_bach_piano_sheet_music.pdfIn PDF document text
    • http://vubixegigag.rf.gd/windows_10_setup_free.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/iturra_design_catalog_2010.pdfIn PDF document text
    • http://gofirog.epizy.com/bombay_dyeing_cartoon_double_bedsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/mississippi_state_tax_withholding_form_w_4.pdfIn PDF document text
    • http://jivugojazop.epizy.com/94752659955.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_off0000ce13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE13 5080 bytes
SHA-256: c352e166abc47454a0e281afecde9028f293758ec42e939d07a25ebadc302e29
font_01_sfnt_off0000df45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF45 9932 bytes
SHA-256: fc8372b4cccb073d9e52bf26e20d6acdabec9858b30e40710a938b214d738cfc