Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cb55843ce3502a0…

MALICIOUS

PDF

77.1 KB Created: 2021-02-09 04:28:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3bd88f2fa953f8f1f76e849dbf353eed SHA-1: 7f31cc3ddf6cb64fcd00ff99a80ae17e822ac78c SHA-256: 7cb55843ce3502a0109c1d630cc09f8efa202b0e4da3ded5ed6e19a874e59116
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://baarspo.ru/123?utm_term=the+language+of+real+estate+7th+edition PDF link annotation
    • https://bafexobis.weebly.com/uploads/1/3/4/0/134041027/2194037.pdfIn PDF document text
    • https://gumevuwogixuxuj.weebly.com/uploads/1/3/5/3/135317748/gadesedubaron-zuderumabanas-donoxo-povenerebawu.pdfIn PDF document text
    • https://dolojimopa.weebly.com/uploads/1/3/4/8/134887070/mugavor_fopopasexipogi_xukosos.pdfIn PDF document text
    • https://cdn.sqhk.co/retobumoki/bTtwbFk/norse_mythology_gods_books.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428083/normal_5fda62f3b582a.pdfIn PDF document text
    • https://cdn.sqhk.co/melivetipi/ghghaWZ/vogomamezamiwitotad.pdfIn PDF document text
    • https://cdn.sqhk.co/xerejijasoma/8XgPfVR/xemano.pdfIn PDF document text
    • http://genusttwsr.fun/the_way_of_the_psychonautj7liy.pdfIn PDF document text
    • http://fortuneo.best/xedilidediwowubafomosujateiwrl.pdfIn PDF document text
    • https://ligexuvuzi.weebly.com/uploads/1/3/0/8/130814340/daluxonepasufoja.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427499/normal_6003dd0472ba7.pdfIn PDF document text
    • http://helpforteam.com/22000938212oblbq.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/sulasatevirexo/wudejitidunuje.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/coshh_sheets_for_asda_products.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/certificado_medico_dif_formato.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_off0000f0f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F8 5196 bytes
SHA-256: a48fce4bfc9318ed0c3e4b9c7865bd47d69981a55ad42fe637ffe6bf7b4ca237
font_01_sfnt_off000102a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102A7 10952 bytes
SHA-256: 909422490e77db59f4c20a89f2da827ec8e4488d515d4fb0e3f312cdbb7d40c4