Malicious PDF — malware analysis report

Static analysis result for SHA-256 1015a5bc184bc7c1…

MALICIOUS

PDF

70.8 KB Created: 2020-06-09 07:22:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 01eed85652cd9e39ae9e6f196bc98d16 SHA-1: e3ffde2faff225ca90fe6e65ff6a30f1aa0ab53f SHA-256: 1015a5bc184bc7c11edf385b3f44089bb215ce07aa436c17db8736771d5ef32b
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.cc/wp3?keyword=ray+bradbury+fahrenheit+451+pdf+descargar#ray+bradbury+fahrenheit+451+pdf+descargar In PDF document text
    • http://mail.vr-cup.de/uploads/1/3/1/4/131453432/9803514.pdfIn PDF document text
    • http://cutleryclubofamerica.com/uploads/1/3/0/7/130738555/75b9be26d57a.pdfIn PDF document text
    • http://chrisahrensmusic.com/uploads/1/3/0/2/130289313/2430132.pdfIn PDF document text
    • http://mail.bostondigitalproductions.com/uploads/1/3/0/2/130291449/gumorufilu-jivugenojafoxu-koxeji.pdfIn PDF document text
    • http://mail.trendsterrabella.com/uploads/1/3/1/3/131398235/6711115.pdfIn PDF document text
    • http://otherbrothers.ca/uploads/1/3/0/4/130488979/namanemes.pdfIn PDF document text
    • http://luxberlin.com/uploads/1/3/0/8/130814250/pomaxuxiz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://lufulekosaro.files.wordpress.com/2020/06/8256193859.pdfIn PDF document text
    • https://rolaroman.files.wordpress.com/2020/06/76004884398.pdfIn PDF document text
    • https://forakij.files.wordpress.com/2020/06/rusolabibudezanalisosezor.pdfIn PDF document text
    • https://muxetapotima.files.wordpress.com/2020/06/nixevufubukibatavur.pdfIn PDF document text
    • https://depikujo.files.wordpress.com/2020/06/xumodozujoxibilonov.pdfIn PDF document text
    • https://satugovanuw.files.wordpress.com/2020/06/juvikosefidupezexarilob.pdfIn PDF document text
    • https://jovemubam.files.wordpress.com/2020/06/79033218609.pdfIn PDF document text
    • https://wigadox.files.wordpress.com/2020/06/kexifafupamison.pdfIn PDF document text
    • https://lexitivagix879528881.files.wordpress.com/2020/06/rulazizopetuw.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e4c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4C5 12568 bytes
SHA-256: 98f303f3c7e7d3d23fb49079e3fdf9645e147f10c53388bda6b0ac362e5d51af

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