Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cf938450820390d…

MALICIOUS

PDF

40.5 KB Created: 2020-11-08 10:12:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 69e7ccf34eac274d694586401c1b745c SHA-1: 6fc0b3c5b46ac4fad779851ba1db1276fe2872ef SHA-256: 1cf938450820390dbb661ef9b9004f7638cbe848bfa83223adff95eb849b0838
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://trafficel.ru/aws?keyword=mod+launcher+for+mcpe+apk PDF link annotation
    • https://dopikilazobowu.weebly.com/uploads/1/3/4/4/134488506/4630885.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374533/normal_5f8b29749d9d8.pdfIn PDF document text
    • https://xogofodaromaf.weebly.com/uploads/1/3/4/3/134387758/dokunikoma.pdfIn PDF document text
    • https://gexirirexov.weebly.com/uploads/1/3/0/8/130874239/kubemofi.pdfIn PDF document text
    • https://pezitojuxesuvog.weebly.com/uploads/1/3/4/6/134608136/bujurox_lufowiduwaf_gugufuroputogo_binoxinudovewe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://vupejiw.files.wordpress.com/2020/11/bavisexizalawanufag.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/34273962408.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/datalogic_falcon_x3_plus_scanner_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/como_funciona_un_servidor_web.pdfIn PDF document text
    • https://jumegufij.files.wordpress.com/2020/11/cmo_para_descargar_definitivo_troll.pdfIn PDF document text
    • https://doveniganov.files.wordpress.com/2020/11/16281616345.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_off00005e62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E62 5288 bytes
SHA-256: 0400db38fb241712bab02ae381be2605310b3c27055c4e64ff7f59b5ac82dbdb
font_01_sfnt_off0000703e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x703E 10848 bytes
SHA-256: fe6d3deba77f517f31272636dfd1ae1ca779e9dd10692f6447c9e20cd808c9f6