Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee5039f8f22fac10…

MALICIOUS

PDF

40.6 KB Created: 2020-11-05 00:58:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-31
MD5: 10880eeec5cb829105228c3ad2c16262 SHA-1: 0ced7f1272e04b983b137f48e54510d5d59970b2 SHA-256: ee5039f8f22fac1062e490f918131cf36d55a9496a43e12396d8101b2ac5bfa6
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://gettraff.ru/strik?keyword=hp+easy+scan+download+windows+7 In PDF document text
    • https://fojanatixisi.weebly.com/uploads/1/3/4/2/134265346/gisizifotedu.pdfIn PDF document text
    • https://fawefugixizim.weebly.com/uploads/1/3/1/3/131383791/7013780.pdfIn PDF document text
    • https://panidulupeju.weebly.com/uploads/1/3/0/9/130969186/a7125354e4d84.pdfIn PDF document text
    • https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/suzuvevat_wasalomux_papuwitu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369307/normal_5f8e32b5f1ac8.pdfIn PDF document text
    • https://xelabuxu.weebly.com/uploads/1/3/4/2/134235382/e488715b0.pdfIn PDF document text
    • https://fatatarulawug.weebly.com/uploads/1/3/4/4/134474158/3478814.pdfIn PDF document text
    • https://ximazula.weebly.com/uploads/1/3/0/7/130738777/zoroxov.pdfIn PDF document text
    • https://topejaliwas.weebly.com/uploads/1/3/4/3/134305960/kuwesuxuvurojov.pdfIn PDF document text
    • https://xogaketur.weebly.com/uploads/1/3/4/5/134593565/wofavorejukinatazon.pdfIn PDF document text
    • https://xigokerurubupa.weebly.com/uploads/1/3/4/3/134312623/zabasadomafi.pdfIn PDF document text
    • https://rudofodirofebas.weebly.com/uploads/1/3/0/7/130739781/doxuzurejibem.pdfIn PDF document text
    • https://tefifegewa.weebly.com/uploads/1/3/4/3/134335978/kidefo_rokod_tetoratedavuda_razudofeni.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/15f737b0-6769-498c-856e-02092178f730/71569510752.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_off000061e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E6 5204 bytes
SHA-256: db6878f04fed237a4460614ea925415062dec48342030c85512a2051a266ca36
font_01_sfnt_off000073cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73CF 9912 bytes
SHA-256: efcbe0b6b3f24cd17011ebe5dc06aa6ab66a1e3bf929a52646267927c1c2ced1

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