Malicious PDF — malware analysis report

Static analysis result for SHA-256 9440bb1d652241bc…

MALICIOUS

PDF

42.9 KB Created: 2020-10-18 20:10:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e34864b683090453ad5f255e4eb94bf6 SHA-1: b19f9016db4165ba40e6155473d4ac146740e72a SHA-256: 9440bb1d652241bc57042e54f73ad4bcf15e5530162b4aa4e505541d99e86cfc
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://ggtraff.ru/123?keyword=kalia+yojana+odisha+list+2020+pdf In PDF document text
    • https://nogafuku.weebly.com/uploads/1/3/2/8/132815296/purepujati.pdfIn PDF document text
    • https://rewemekekebaz.weebly.com/uploads/1/3/1/4/131406535/sazebekijepesev-vobat-zewujon.pdfIn PDF document text
    • https://dofazodasi.weebly.com/uploads/1/3/0/8/130873943/e86f4ee2fb7be4d.pdfIn PDF document text
    • https://jiwepurojal.weebly.com/uploads/1/3/0/7/130775762/gubaboba-bovunidi-modivusup-bipomoju.pdfIn PDF document text
    • https://wavuvavezexa.weebly.com/uploads/1/3/0/7/130775629/4dc2b.pdfIn PDF document text
    • https://besavikeneg.weebly.com/uploads/1/3/2/8/132815808/punuwagevugupeb.pdfIn PDF document text
    • https://zoveponezewuda.weebly.com/uploads/1/3/0/7/130738822/fd1b3209b9d.pdfIn PDF document text
    • https://runebipunozup.weebly.com/uploads/1/3/1/4/131406604/jajopikalo_lusov.pdfIn PDF document text
    • https://rabexowubomisuw.weebly.com/uploads/1/3/1/4/131407155/aef29bee86535a.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/c89ee421-e211-4902-b77e-eaa069c63473/xawijufevegowekoxiba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f07c9c7-cd87-4544-8836-a893bd047d07/kategibikelovusim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c023586-5a0a-4d93-b274-1a39592639fc/kinujoxivekapufonu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3f3080e-1355-4fbb-a41d-1d51543660f6/9200129979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3566/7875/files/the_office_studio_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5667/6510/files/pomezefitewipomesuli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4819/8556/files/how_does_icy_hot_roll_on_work.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_off0000686a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x686A 5452 bytes
SHA-256: 021a4be13711c99fe663a1b3181b8cfce640ec41887c58f40ba821097a2148bb
font_01_sfnt_off00007b09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B09 10564 bytes
SHA-256: dad812fd3d87f4acfda272666939cda8de70ac3637b143c5a5ffc23c548902c4

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