Malicious PDF — malware analysis report

Static analysis result for SHA-256 7148f1803430c7c6…

MALICIOUS

PDF

66.8 KB Created: 2021-02-22 01:07:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0637bd1ae425b301eb855379bd43bce0 SHA-1: a4f9b70ae379d3bece5d92c558f486788449de81 SHA-256: 7148f1803430c7c679d6874b88bc9fce10f733c6bbeea3387410bcd615963d3c
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://yafferge.ru/wix?keyword=miraculous+ladybug+costume+with+wig In PDF document text
    • https://cdn.sqhk.co/zimopaji/1PjhKjh/operation_market_garden_casualty_list.pdfIn PDF document text
    • http://conicppjry.bid/calories_in_dunkin_donuts_beyond_meat_breakfast_sandwichx7029.pdfIn PDF document text
    • https://cdn.sqhk.co/dowivita/n61Pljj/73616574711.pdfIn PDF document text
    • http://oneitstore.pro/teradek_cube_155_firmwarews2h9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382961/normal_602e3a12d5184.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468289/normal_5fce8517a5ed4.pdfIn PDF document text
    • https://cdn.sqhk.co/satasevubu/hroeAS5/juventus_best_players_2015.pdfIn PDF document text
    • https://seligelota.weebly.com/uploads/1/3/1/4/131453084/9159228.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404730/normal_5ff69aa5aa570.pdfIn PDF document text
    • http://good-production9.site/63596033856c7xmt.pdfIn PDF document text
    • http://proba7.xyz/kosuwikosigagedeyz1q4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461505/normal_60098c54b06fc.pdfIn PDF document text
    • http://reduslimitalia-ufficiale.site/10860297321m9mgg.pdfIn PDF document text
    • http://ampinternational.org/dugegowojesutojuku1j013.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_off0000c816.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC816 5692 bytes
SHA-256: 594b0605c87eee7c5f21ffcd3d3a3ebfd8e3e5599fab629de9d5e72e667dbb26
font_01_sfnt_off0000db67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB67 10228 bytes
SHA-256: 009ec84b68ce78600ea850bd7cd905bc57ca693d81a8ecfcecbe6a036a123e09