Malicious PDF — malware analysis report

Static analysis result for SHA-256 138a9653d0e2763c…

MALICIOUS

PDF

38.6 KB Created: 2020-03-17 15:38:48 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 2cc875737384ca13c3f1aff02bde1d2c SHA-1: afa34fbcf8ba070e19ed2591857d7fb7443b0528 SHA-256: 138a9653d0e2763c9a585ceabfd188ad0aebd988abf3bb603f99923036fb9cb1
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of embedded external links, identified by the 'PDF_SEO_LINK_FARM' heuristic. The primary URL found in the document body, 'http://morethanjustaface.nl/uploads/1/3/0/4/130490006/130490006.html#arquitectura+de+paisaje+universidades', is part of this link farm. The ML classifier strongly indicated maliciousness, suggesting the document is designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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 http://morethanjustaface.nl/uploads/1/3/0/4/130490006/130490006.html#arquitectura+de+paisaje+universidades
    • http://www.cleanfinishdetail.com/uploads/1/3/0/3/130379351/9580490.pdf
    • http://castervaria.org/uploads/1/3/0/5/130543665/8a9c2.pdf
    • http://art630.com/uploads/1/3/0/3/130323485/ligigexol.pdf
    • http://marylandvcoc.com/uploads/1/3/0/7/130776714/gowexet-lodonajitabege-duwatumigobadul-wegosupirazes.pdf
    • http://mail.mrmacbiblebook1.com/uploads/1/3/0/4/130489253/xilizoge.pdf
    • http://elainesstudio.com/uploads/1/3/0/6/130621666/damuzimebobakeror.pdf
    • http://lvhalo.com/uploads/1/3/0/7/130740330/787fc1b060561.pdf
    • http://mcquoteblocks.com/uploads/1/3/0/6/130639267/sujogotilogef_xokamirukorom_jumipitogajosu_lekimina.pdf
    • http://aaagradeclothing.com/uploads/1/3/0/8/130873941/2b6c5e7a3e0.pdf
    • http://qingmang.coffee/uploads/1/3/0/2/130271087/rababapudefixo.pdf
    • http://woolerneighbourhoodplan.org/uploads/1/3/0/6/130639831/09fbd4b.pdf
    • http://thecryptogiftshop.co.uk/uploads/1/3/0/6/130605112/be0ac9626cd97.pdf
    • http://stylisharms.net/uploads/1/3/0/5/130589042/647745.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c57.bin
1215958b75b4f2ba0df3fcdd9457d4317bcd4da832c6d6139f83d750b26d1b07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C57 8632 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.