Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb5097e3a49c1fb2…

MALICIOUS

PDF

51.7 KB Created: 2020-11-08 12:35:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 157995246418bafe71957b578b3c1358 SHA-1: 753b64d845769dbf8c9719d301b38f971f96fbc1 SHA-256: cb5097e3a49c1fb2c6db297a17185aa7c7f7c6f658927f424ff30f17e24ec53f
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://trafffi.ru/123?keyword=hack+st+math+jiji+skip+levels PDF link annotation
    • https://junoxavod.weebly.com/uploads/1/3/1/3/131384771/65fe53c16ef2d2c.pdfIn PDF document text
    • https://futokiwusilo.weebly.com/uploads/1/3/4/4/134458686/4007258.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/7e0e7e3b-aa5e-4d68-90f1-7d46b6c44fc9/teach_yourself_cs_a_diy_curriculum_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b5520fd-d50e-4c7c-85f6-6dede198a535/10036641203.pdfIn PDF document text
    • https://finoxomajir.files.wordpress.com/2020/11/88549499011.pdfIn PDF document text
    • https://gadelonu.files.wordpress.com/2020/11/37073015125.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/kilozibi.pdfIn PDF document text
    • https://xexarubi.files.wordpress.com/2020/11/xanthelasma_argile_verte.pdfIn PDF document text
    • https://bimozevuve.files.wordpress.com/2020/11/kuroruzafeluregipozag.pdfIn PDF document text
    • https://tafexoru.files.wordpress.com/2020/11/3294531957.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22aad5d3-7ddf-4155-a2a9-e3c0ed3195f8/85963017121.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/12327707405.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/zopurawibupilifate.pdfIn PDF document text
    • https://serabeluf.files.wordpress.com/2020/11/tigerheart27_s_shadow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e6615dc-b3b7-4a14-8118-737aca328601/fudasul.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_off00008983.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8983 5240 bytes
SHA-256: 67d041f8148936f3f3ef431c7beb768f7a8f8e616d1ebe89485f79a4f78b1f6c
font_01_sfnt_off00009b3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B3B 11520 bytes
SHA-256: 4c05ce7addda070df75eb4023ea6f6b057b14d2d008746a0affda916be4a221b