Malicious PDF — malware analysis report

Static analysis result for SHA-256 e89986d909ca61ec…

MALICIOUS

PDF

54.3 KB Created: 2020-11-08 20:19:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 312ccb78c9eae8507a24c63c6b3da0b6 SHA-1: a981fb87183b5284875323b354a7f5ab74df51bd SHA-256: e89986d909ca61ec7ddc1ee45880a1ea16258c02ad5f6506396da08efdfc57cd
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=dnd+5e+curse+of+strahd+pdf+download PDF link annotation
    • https://xavujome.weebly.com/uploads/1/3/0/7/130739328/767081.pdfIn PDF document text
    • https://notupazepikinis.weebly.com/uploads/1/3/4/3/134382888/resixulefemoz-pupegikudazi-notetug-wosokag.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/9cc387a2-18d3-402b-9a04-a53e817b6126/bopegadewumulitibezodap.pdfIn PDF document text
    • https://megebomerif.files.wordpress.com/2020/11/control_interno_de_cuentas_por_cobrar.pdfIn PDF document text
    • https://wosesufow.files.wordpress.com/2020/11/minecraft_gore_mod.pdfIn PDF document text
    • https://nifesewuwa.files.wordpress.com/2020/11/zowolusevavenabamit.pdfIn PDF document text
    • https://xeruluzolu.files.wordpress.com/2020/11/denivaxatasiloselapubal.pdfIn PDF document text
    • https://kebupud.files.wordpress.com/2020/11/16674380217.pdfIn PDF document text
    • https://sexonilapaxo.files.wordpress.com/2020/11/45851229289.pdfIn PDF document text
    • https://kufotukir.files.wordpress.com/2020/11/88562886637.pdfIn PDF document text
    • https://kakuluk.files.wordpress.com/2020/11/golotefinirubikajuvob.pdfIn PDF document text
    • https://s3.amazonaws.com/lopazura/lidekonarupuvuso.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_off000085a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85A2 5456 bytes
SHA-256: deee43c36eb69c3c6b71a7412475dd7989d71db624a760365237a2ee48757efa
font_01_sfnt_off0000984b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x984B 17912 bytes
SHA-256: 028a48aeb36db9d797109b2d97eed009c38a96da0108002f5086bdd6d2c09122