Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e378bab1cabfcda…

MALICIOUS

PDF

71.4 KB Created: 2021-01-25 05:02:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-19
MD5: 2f71605fe3b6327c8c70ba229b77526d SHA-1: d223b7f0fb9e20a58de4ca84a6eb55c1d6ef8a7e SHA-256: 4e378bab1cabfcda42638a70687a69d07bc5287702fd520962caa83320622da2
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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/wb?keyword=drones%20attacked%20saudi%20arabia%20oil%20pipeline In PDF document text
    • https://manomukujoputu.weebly.com/uploads/1/3/4/5/134517900/kodejevefavaj.pdfIn PDF document text
    • https://fusajebotiv.weebly.com/uploads/1/3/4/3/134320253/zufumole_fixaxegatugow.pdfIn PDF document text
    • https://kunepupavebi.weebly.com/uploads/1/3/4/0/134095879/8842663.pdfIn PDF document text
    • https://riledamulobav.weebly.com/uploads/1/3/0/9/130969772/dodorujitav.pdfIn PDF document text
    • https://cdn.sqhk.co/todiwapubu/Is7iagd/gawevajubewuvama.pdfIn PDF document text
    • https://titugujogimob.weebly.com/uploads/1/3/4/0/134017720/guporegoni_wilero_kufidire.pdfIn PDF document text
    • https://cdn.sqhk.co/zugeketinog/W56Dhfz/16018208294.pdfIn PDF document text
    • https://cdn.sqhk.co/gizimonuzubi/zJjbkge/99008139700.pdfIn PDF document text
    • https://xaxibilezulaf.weebly.com/uploads/1/3/4/0/134096047/3487121.pdfIn PDF document text
    • https://cdn.sqhk.co/tazifawixax/iihtjbw/guvolezop.pdfIn PDF document text
    • https://cdn.sqhk.co/kevuviwa/icibUeA/g_s_t_movie_in_telugu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gidorewen.rf.gd/letter_of_resignation_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/73792484208.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/agreement_form_between_two_companies.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_off0000d833.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD833 5268 bytes
SHA-256: 508732e93df507e5605ef8c2831d3eccf77cbca7bb0ab646c32f865d5878e8e7
font_01_sfnt_off0000ea2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA2C 11312 bytes
SHA-256: d5b5c0e5498bfb3a3df6514c5ba2c8a150ed9883e30dc9900f016532c73f22ce