Malicious PDF — malware analysis report

Static analysis result for SHA-256 442f3390b73d3af3…

MALICIOUS

PDF

71.0 KB Created: 2021-01-20 01:23:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a9ab546aabf1331b19a768a35595bdf7 SHA-1: c014844ca7d0ec8771ddf0eab292899987f5dffa SHA-256: 442f3390b73d3af373b3d8ca263b23def26bbcb2a0118e6e1cd88c7324915b99
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://leonvi.ru/wb?keyword=free%20download%20eurodance%2090%20remix%20mp3 PDF link annotation
    • https://site-1245158.mozfiles.com/files/1245158/zafenoraxopun.pdfIn PDF document text
    • https://cdn.sqhk.co/bipujawojeli/1jjBige/gaming_wallpaper_hd_for_mobile.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462341/normal_5fed9332d4bbc.pdfIn PDF document text
    • https://site-1167978.mozfiles.com/files/1167978/70532711676.pdfIn PDF document text
    • https://site-1171628.mozfiles.com/files/1171628/puxamipelazojibidobo.pdfIn PDF document text
    • https://site-1175763.mozfiles.com/files/1175763/vepobudemezobonulav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382413/normal_5f92d88ba3ce7.pdfIn PDF document text
    • https://site-1177243.mozfiles.com/files/1177243/sidadalolijenulagixapa.pdfIn PDF document text
    • https://site-1176410.mozfiles.com/files/1176410/i_will_always_love_you_husband_quotes.pdfIn PDF document text
    • https://cdn.sqhk.co/wexufenu/jcKkiaT/nobab.pdfIn PDF document text
    • https://dexatasudawuge.weebly.com/uploads/1/3/4/4/134477966/jugavimukasobajij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421336/normal_5fb2b7c624634.pdfIn PDF document text
    • https://kivepuwepadile.weebly.com/uploads/1/3/4/3/134392404/wusatukitab.pdfIn PDF document text
    • https://site-1204364.mozfiles.com/files/1204364/wonderful_tonight_piano_sheet.pdfIn PDF document text
    • https://site-1168481.mozfiles.com/files/1168481/uc_browser_app_for_phone.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/pesetufavo/75975325223.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/hilti_profis_3d_cad_library.pdfIn PDF document text
    • https://s3.amazonaws.com/vukujidor/makalah_alelopati.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_off0000d51c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD51C 5620 bytes
SHA-256: 7850aaf5870bdf7350a7b16b85c98852c971fd787fb2df98e66abc48f4e5ac8e
font_01_sfnt_off0000e83c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE83C 10832 bytes
SHA-256: 774eebc4bcbf7d239eab909c117008d6171055bd435419a8dd4c0c585271fa62