Malicious PDF — malware analysis report

Static analysis result for SHA-256 a607473ac09cfd7c…

MALICIOUS

PDF

40.8 KB Created: 2020-11-06 16:33:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 7cf55625fb8fbf6a8bf0b8b47ff047e2 SHA-1: 01b693185b9386e729c7a0214114b109be98fbb4 SHA-256: a607473ac09cfd7cb1b1bcd1e78da97765c086fed8cc5ac8faa2c8cdcc1f865d
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://traffset.ru/aws?keyword=internet+download+manager+free+download+apps PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420449/normal_5fa1223f65438.pdfIn PDF document text
    • https://norumevi.weebly.com/uploads/1/3/0/9/130969469/dde7339725.pdfIn PDF document text
    • https://bisudika.weebly.com/uploads/1/3/4/3/134366448/5902878.pdfIn PDF document text
    • https://razesupimo.weebly.com/uploads/1/3/2/8/132815812/zexukuvaborobe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383695/normal_5f90306040ddd.pdfIn PDF document text
    • https://jalewigevat.weebly.com/uploads/1/3/2/6/132681207/15b4d9a2b702.pdfIn PDF document text
    • https://xisudujerixaxir.weebly.com/uploads/1/3/4/5/134583325/2420973.pdfIn PDF document text
    • https://saxepuxuk.weebly.com/uploads/1/3/4/4/134472003/5493544.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365552/normal_5f8c870359470.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/fca9f9fa-5923-4b58-8a88-717fb357a131/molozumebid.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/mimoludu.pdfIn PDF document text
    • https://s3.amazonaws.com/tagorarib/82985120615.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e935f17-b75b-4ef5-9317-6f59a422f739/solucionario_fisica_2o_bachillerato.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_off000060da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60DA 5392 bytes
SHA-256: 5420377abbf1e59dd839a47707f2b77e9af9e52549799019071f6e07250dbf84
font_01_sfnt_off00007330.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7330 10288 bytes
SHA-256: 304e58c0f5541de12b3d78eddfe553f52e976b52902275d38bbbcad6c5d5c942